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A Mini-Course
in The Course of Philosophy After
Aristotle
These mini-courses study the growth of
philosophy after its emergence in the early Greek
Schools, and traces the development of philosophic
thought from Socrates to its relatively full
expression in the magnificent synthesis of
Aristotle in the 4th century B.C. Also discussed is
the retrogression of philosophy after Aristotle.
Part I discusses the philosophy of Socrates and
Plato. Part II discusses the philosophy of
Aristotle. Part III discusses the course of
philosophy after Aristotle.
Part III of The Development of Philosophy is
divided into six Sections:
- Section 1: The Later Greek Schools
- Section 2: Greco-Jewish Philosophy
- Section 3: Neoplatonism
- Section 4: Gnosticism
- Section 5: Manicheism
- Section 6: Patristic Philosophy
Section 1.
The Later Greek Schools
After Aristotle philosophy suffered a long
period of retrogression. Ancient errors were
revived. Chief of these were skepticism,
which denies the ability of man to attain truth and
certitude; materialism, which asserts that
the bodily universe is the whole of reality;
pantheism, which, in one way or another,
identifies God with the material world.
The chief interest of the "schools" or groups of
philosophers centered, at this time, upon the
ethical question, the question of human
happiness and the means of attaining it.
The most notable of the "schools" are here to be
briefly considered. These were the Stoics, the
Epicureans, the Skeptics, and the Eclectics.
(a) The
Stoics -- chief of whom were Zeno of
Citium, Cleanthes of Assus, and Chrysippus of Soli
-- held that the material world is the only reality
(cosmological materialism), and that God is
the soul of the world; He is a kind of fire,
and of this fire the human soul is, so to speak, a
spark (pantheism). Everything exists and
happens by fixed law and necessity; neither God nor
man has any freedom (determinism). Man's
business is to find happiness. But, since man, like
everything else, is subject to the sway and
buffetings of changeless fate, the only way to
happiness is that of stolid and passionless
endurance. "Bear and forbear" is the Stoic motto.
This motto is capable of a splendid and Christian
interpretation, but, as is manifest, the Stoics did
not understand it in any such light. Man, said the
Stoics, must be apathetic, neither giving way to
pleasure in the things of sense nor acknowledging
the pressure of sorrow and pain.
- More details about the Stoics and individual
Stoic philosophers can be found in The Radical
Academy HERE.
(b) The
Epicureans -- named for Epicurus, an
Athenian philosopher -- held that man can have no
true intellectual knowledge, but only the knowledge
that comes through the senses (sensism). The
action of the senses, that is, sensation, is
either pleasurable or painful. Man must avoid what
is painful and indulge what is pleasurable. Yet man
must not wallow in sense-pleasures, for excess is
always productive of subsequent pain. Hence man
must live with great moderation; he must hold
desire in check; he must cast off all worry and all
fear. Thus shall he achieve serenity of mind and
heart, and this is the true pleasure for which
man is made. All this amounts to hedonism,
or quest of what is sweetly pleasing; and some
pessimism or the conviction that the best
life has to offer is the avoidance of pain. The
Epicureans thought that the bodily world is a kind
of cluster of particles, variously united by sheer
chance to constitute the different things we see
about us. Here we have materialistic atomism
and casualism.
- More details about Epicurus and the
Epicureans can be found in The Radical Academy
HERE.
(c) The
Skeptics -- variously classified as the
Pyrrhonians, the Neo-Pyrrhonians, the Academians --
held that man cannot attain to certain knowledge of
anything; he cannot surely and positively know
truth. Some skeptics admit the possibility of
attaining probability, and some say that even this
is beyond man's powers. Hence philosophy and
science are illusory. And no moral duties exist,
for if man can know nothing for certain, how can he
know that any duty certainly binds him? The best a
man can do is to seek quietness and
imperturbability of mind; in this lies his
happiness. It is manifest that the view of the
skeptics is pessimistic, amoral, and
stoical.
- More details about the Skeptics can be found
in The Radical Academy HERE.
(d) The
Eclectics -- named from the Greek
eklegein which means "to choose out" --
thought that true philosophy is scattered piecemeal
throughout all existing theories, and it is the
business of the philosopher to sift it out. The
"test" for the authentic philosophy is, according
to the Greek Eclectics, a person's direct
experience plus a kind of "inner voice" or instinct
which proclaims truth or indicates its
presence.
- More details about the Eclectics can be
found in The Radical Academy HERE.
It is manifest that these later Greek schools
worked a damage to philosophy. They represent a
"throw back" to crass materialism and pantheism.
Despite the doctrine of moderation which they
generally recommend, they represent a surrender to
sensualism. Their ignoring or denial of
philosophical certitude is the suicide of thought;
they make all science and all philosophy utterly
impossible.
There is a dead and pessimistic sameness in
these schools. This is due to the fact that their
ethical theory is wholly divorced from reality.
Ethics, as a human science, is the fruit of the
sound philosophy of reality, indeed of true
metaphysics. When it is severed from this true
source or principle, ethics becomes a subjective
theory of flabby sentimentalism and invariably
degenerates (as history shows) into dull and dreary
pessimism.
Section 2:
Greco-Jewish Philosophy
The so-called Greco-Jewish philosophy was the
result of an attempt to draw into a harmonious
system the Greek philosophy (especially that of
Plato) and the Old Testament Scriptures. The effort
was made by certain Jews of Alexandria in Egypt,
chiefly by Aristobulus (2nd century B.C.) and
Philo
(born about 25 B.C.).
Aristobulus is notable as the inaugurator of the
system. Philo is the one great name associated with
this syncretizing or amalgamating effort.
Philo was a contemporary of Jesus Christ. He was
known as an eminent scholar with an unbounded love
for the philosophy of Pythagoras
and of Plato.
Like Aristobulus, Philo was convinced of two
things: first, that Holy Scripture is the source of
all truth; true philosophy derives from
Scripture, and therefore the function of the
philosopher is the interpreting of Holy Writ;
second, the Greek philosophy is the best that man
has done in his quest for wisdom; it is the true
philosophy, therefore, it must be fundamentally at
one with Scripture and indeed, rightly understood,
must be seen as something derived from Scripture.
Philo sets to work to harmonize and unify
philosophy and revelation.
Philo teaches that God is an inexpressibly
perfect Being. God begets the Logos or Word which
contains in Itself patterns of all creatable things
as well as the power to produce them and to
interpenetrate them as their soul. The Logos does
Its work by impressing forms upon matter.
Matter is wholly imperfect; it exists eternally; it
is independent of God. The soul of men existed
before their bodies, and were imprisoned in bodies
in consequence of some offense. Release from the
body-prison is achieved by conquest of fleshly
tendencies and cultivation of serene contemplation
of God. Unless a man take the one means of release,
his soul passes from body to body in a continuous
transmigration which is the only hell. The study of
philosophy is a splendid aid in quelling passion
and setting up the spirit of contemplation.
Philo is manifestly eclectic in tendency, for he
"picks and chooses" the elements of his doctrine
from Greek philosophy and Holy Writ. He is, in many
points, Platonic; thus he holds to the subsistent
forms of things resident in the Logos; to the
pre-existence of human souls; to the transmigration
of souls (although his transmigration is ever from
one human body to another and never downward
through animals to plants, as in Plato); to the
merely accidental union of man's soul and body. We
notice, too, that Philo adopts the Stoical idea of
a world-soul. And he borrows (as the Greeks had
borrowed before him) the ancient oriental notion of
rapt contemplation or ecstatic absorption in
God.
Like the later Greek school just discussed,
Philo represents a retrogression in philosophy, not
an advance. His system is more Greek than biblical.
It contains deeply erroneous doctrines on the
theological question, the psychological question,
the cosmology question, and the ethical
question. Based as it is on the gratuitous
assumption of Scripture as the only source of
knowledge, it also errs on the critical
question. Throughout, Philo makes Scripture
conform to his conception of Greek philosophy; he
seldom, if ever, puts pressure on his philosophy to
bring it into line with Scripture. His system is,
among other things, materialistic, pantheistic, and
pessimistic.
Section 3:
Neoplatonism
Neoplatonism, like the Greco-Jewish philosophy,
is an attempt at "blending." It is an amalgam of
Plato's philosophy and ancient oriental doctrines;
with these are mingled some almost forgotten
doctrines of the earliest Greeks. Neoplatonism is
not a single or clear-cut system; various
Neoplatonist theories were taught at Alexandria, at
Athens, and in Syria. The Athenian "school" of
Neoplatonism was the most worthy of note because it
had the one philosopher of importance whose name is
associated with this syncretizing and eclectic
movement. This was Plotinus
(204-269).
Plotinus taught that there is a formless Supreme
Being. This being he calls The One. From
this Being emerges mind or intelligence; that is,
Nous. From Nous come The World-Soul.
Here we have indubitably a pagan's mistaken
interpretation of the Christian doctrine of The
Trinity. The human soul, while radically identified
with The One, with Nous, and with World-Soul, is
nevertheless a sort of individual; it existed
before it had a body, in which it is unhappily and
unnaturally enmeshed; it is immortal. The soul must
struggle to be free of the trammels of the flesh
and to rise to contemplation of The One in
conscious union with Nous and World-Soul. Perfect
attainment of this glorious contemplation (which is
one of direct or intuitive vision) is only to be
attained in the life to come. Souls that fail to
free themselves of subjection to the body will have
to endure a succession of transmigrations until
they have finally attained to purification.
Plotinus borrows from strangely assorted
sources. From the Christian faith he takes (and
distorts) the notion of the Trinity, and the
doctrine of the Beatific Vision. From Pythagoras
(and Plato) he takes transmigration, and from Plato
he takes the pre-existence of human souls. From the
old Ionians he borrow the notion of a living world
(for World-Soul, or Demiurge, makes the world a
living thing); and the notion of a world-soul
itself is borrowed from the Stoics.
Plotinus is pantheistic, hylozoistic, and
materialistic. It is interesting to note in passing
that Henri
Bergson (1859-1940), a French Jew who came to
recognize the truth of the Catholic religion
although he never became a Catholic, considered his
appreciation of Christianity to be the fruit of his
devoted study of Plotinus.
Section 4:
Gnosticism
Certain heretics of early Christian times called
themselves by the Greek name of gnostikoi or
" the enlightened ones." These folk are known in
history as the Gnostics, and their doctrine is
Gnosticism.
The Gnostics claimed to have a special divine
illumination (or gnosis "knowledge" or
"enlightenment") which is denied to ordinary men.
By aid of the gnosis they claimed to
understand all fundamental truths. Their doctrine
is a sad mixture of Neoplatonism, badly twisted
Christian doctrine, and plain paganism.
The Gnostics taught that God cannot come into
contact with matter, for matter is wholly vile and
God is all-perfect. God created spiritual beings;
these created others less perfect than themselves;
these created others still less perfect, and so on
until the least perfect spiritual beings
created the bodily world.
Matter, or bodiliness, is the source of all
evil. The human body is the source of evil in man.
Man must free the soul from the influence of the
body which imprisons it so that death may restore
it to its pure and pristine state.
Among the spiritual beings that intervene
between God and the material world is one called
Christ. Another is Jesus. These are
two beings, not one. Jesus assumed an apparent
human body and Christ was united with Him at the
baptism by John in the Jordan. Jesus and Christ, in
union, worked for the deliverance of mankind from
pains. At the Crucifixion, Christ withdrew from
Jesus, and Jesus suffered the pain and death in His
apparent human body.
Gnosticism is an example of what prideful
ignorance can do. As philosophy it is meaningless,
for it is wholly gratuitous, baseless, and
grotesque. It died quickly; by the end of the 3rd
century it was extinct. But something like
Gnosticism is always recurring in the world, and
notably in times of intellectual exhaustion or
decadence.
Valentinus, Marcion of Sinope, and Basilides of
Alexandria -- all of the 2nd century -- were
notable Gnostics.
Section 5:
Manicheism
Manes or Mani, whose name is Latinized as
Manichaeus, was a Persian reformer of the
3rd century. He taught a mixture of doctrines taken
from Zoroaster, the Neoplatonists, the Gnostics,
and the Christians.
Manicheism holds the theory of two first
principles, one of goodness and light, the other of
evil and darkness. These are God and Satan. Each
produced creatures of his own, and the world is
made up of these; hence the world is a mixture of
good and evil. Each human being is also a mixture
of good and evil. Man must seek to make the good in
him triumph over the evil that is there. He
achieves this victory by contemplation of the truth
and by bodily austerities. Still, since the average
man is very weak and consequently unable to wage
the constant exacting warfare against evil, he need
not concern himself too much about the effort.
Manicheism, like all decadent philosophies, is
full of a great weariness together with a wistful
longing for ideals and a pathetic half-attempt to
set forth a system of guiding truths.
Section 6:
Patristic Philosophy
The Fathers of the Church (that is, Patres
Ecclesiae, whence comes the adjective
Patristic) were those holy and leaned men of
the first Christian centuries who wrote notable
treatises in explanation or defense of the Catholic
faith. In their work of uprooting heresy and
planting true doctrine, the Fathers came constantly
upon false philosophical theories which had to be
met and answered on philosophical grounds. Thus
many of the Fathers were, perforce, philosophers.
Among these we must mention St. Clement of
Alexandria (2nd & 3rd century); Origen (3rd
century); Minucius Felix (2nd century); Tertullian
(2nd & 3rd century); Lactantius (3rd century);
Arnobius (4th century). [More information about
Patristic Philosophy in The Radical Academy can be
found HERE.]
We must also mention the great Greek and Latin
Fathers who flourished after the Council of Nice
(A.D. 325). The "Big Four" among the Greek Fathers
were John Chrysostom, Athanasius, Gregory of
Nazianzen, and Basis. Among the Latin Fathers, the
"Big Four" were Jerome, Ambrose, Gregory the Great,
and Augustine.
Of all the Fathers, by far the most notable in
philosophy was the illustrious African, Aurelius
Augustinus, whom we know as St. Augustine of
Hippo.
St. Augustine (354-430) was not only a great
philosopher; he was one of the very greatest that
the world has ever known. To a genius approaching,
if not equaling, that of Plato or even that of
Aristotle, he joined the light of knowledge that
comes with the Christian faith. In the cast of his
philosophy he is Platonian rather than
Aristotelian, for in his day Plato was universally
regarded as the king of philosophers. Aristotle was
not recognized at his true worth until a much later
day, although he was always held in reverent
esteem. It was left for two great Dominicans,
William of Moerbeke and St.
Thomas Aquinas -- the former by a pure
translation and the latter by his interpretation
and application of Aristotelian philosophy -- to
bring Aristotle to his true place as far and away
the greatest philosopher of ancient times, and
indeed of all times.
St. Augustine taught that the mind of man is
adequate to attain to truth with certitude; he held
that the mind is much aided in its work by
endeavoring to have as clear an idea of God as it
is possible to achieve; for to know God is to have
some concomitant knowledge of God's creatures and
of all knowable things.
St. Augustine proves the existence of God from
the contingency of the world; from the nature of
the human soul; and from the character of human
knowledge. He shows that God is infinite, eternal,
changeless, and absolutely free; that God creates
in goodness, unimpelled by any stress or necessity.
He says that, in the beginning, God made all living
bodily creatures (excepting man) in germ;
that is, God gave to certain particles of matter a
kind of see-force (or ratio seminalis) to
develop into determinate plants and animals at a
time set beforehand by God. Man, however, is not
explained by this theory of rationes
seminales. Man's soul is a spiritual and
immortal substance, wholly present in every part of
the living human body. As to the origin of the
soul, St. Augustine felt that the inheritance of
Original Sin indicates the fact that the soul is
somehow drawn from the souls of parents
(traducianism).
Man, says St. Augustine, is endowed with
free-will. He tends of necessity towards beatitude
or happiness, but he freely chooses the means
whereby he seeks to attain this beatitude. Man's
freedom of choice is in no way hindered or hampered
by God's foreknowledge of human acts. The object
that will perfectly fill up man's capacity for
happiness is God alone; St. Augustine cites and
interprets Plato in proof of this truth. God is to
be known, loved, and served in this life, and He is
to be possessed in heaven by an immediate intuition
or direct vision of the Divine Essence (the
Beatific Vision).
The law or norm of morality for man is the
Eternal Law. The Eternal Law is God Himself
inasmuch as He ordains the order He has set up in
nature to be conserved and forbids it to be
disturbed (the natural law). Man's normal
and natural grasp of the natural law is effected by
reason, that is, by the thinking mind, and
in this service reason is sometimes called
conscience.
God is in no sense the cause of moral evil or
sin. Sin is possible because of the abuse of
free-will by man, and God, having bestowed
free-will, does not take it away again even when it
is abused. In His loving Providence, God draws good
out of evil, even of moral evil. God may be called
the cause per accidens (that is, the
accidental cause) of physical evils in the
world; yet these evils, rightly undergone, prove to
be blessings to man.
Summary of Part III of
The Development of Philosophy
We have briefly discussed, in Part III, the more
notable expressions of the philosophy of times
following the Golden Age of Greek achievement.
The Later Greek Schools, and the syncretizing
systems (Greco-Jewish philosophy, Neoplatonism,
Gnosticism, and Manicheism) have nothing whatever
in the way of solid or original thought to offer;
their borrowings from many sources are, for the
most part, set forth as gratuitous assertions.
The decadence of philosophy represented in these
schools and systems was checked at last by the
emergence of the perennial philosophy as developed
by philosophers such as St. Augustine.
Our vocabulary of philosophical terms and
phrases has been enriched as we learned the meaning
of:
- skepticism
- materialism
- pantheism
- cosmological materialism
- soul-of-the-world theory
- Stoicism
- Epicureanism
- Eclecticism
- determinism
- sensism
- materialistic atomism
- casualism
- hedonism
- Manicheism
- Gnosticism
- Neoplatonism
- traducianism
- creationism (with reference to the
soul)
- theory of "rationes seminales"
- the natural law
- the Eternal Law
- the Beatific Vision
- reason
- conscience
- cause per accidens
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