What theories did Thomas Aquinas propose to conclude that humans are creature of god?
To understand the crucial importance of this controversy for
Western thought, it is necessary to consider the context in which
it occurred. Before the time of Aquinas, Western thought had been
dominated by the philosophy of Saint Augustine, the Western
church's great Father and Doctor of the 4th and 5th centuries, who
taught that in the search for truth people must depend upon sense
experience. Early in the 13th century the major works of Aristotle
were made available in a Latin translation, accompanied by the
commentaries of Averroës and other Islamic scholars. The vigor,
clarity, and authority of Aristotle's teachings restored confidence
in empirical knowledge and gave rise to a school of philosophers
known as Averroists. Under the leadership of Siger de Brabant, the
Averroists asserted that philosophy was independent of
revelation.
Averroism threatened the integrity and supremacy of Roman
Catholic doctrine and filled orthodox thinkers with alarm. To
ignore Aristotle, as interpreted by the Averroists, was impossible;
to condemn his teachings was ineffectual. He had to be reckoned
with. Albertus Magnus and other scholars had attempted to deal with
Averroism, but with little success. Aquinas succeeded
brilliantly.
Reconciling the Augustinian emphasis upon the human spiritual
principle with the Averroist claim of autonomy for knowledge
derived from the senses, Aquinas insisted that the truths of faith
and those of sense experience, as presented by Aristotle, are fully
compatible and complementary. Some truths, such as that of the
mystery of the incarnation, can be known only through revelation,
and others, such as that of the composition of material things,
only through experience; still others, such as that of the
existence of God, are known through both equally. All knowledge,
Aquinas held, originates in sensation, but sense data can be made
intelligible only by the action of the intellect, which elevates
thought toward the apprehension of such immaterial realities as the
human soul, the angels, and God. To reach understanding of the
highest truths, those with which religion is concerned, the aid of
revelation is needed. Aquinas's moderate realism placed the
universals firmly in the mind, in opposition to extreme realism,
which posited their independence of human thought. He admitted a
foundation for universals in existing things, however, in
opposition to nominalism and conceptualism.