Summa
Article 2. Whether sacred doctrine is a science?
Objection 1. It seems that
sacred doctrine is not a science. For every science proceeds from self-evident principles. But
sacred doctrine proceeds from
articles of faith which are not self-evident, since their
truth is not admitted by all: “For all
men have not
faith” (
2 Thessalonians 3:2). Therefore
sacred doctrine is not a science.
Objection 2. Further, no science deals with individual facts. But this
sacred science treats of individual facts, such as the deeds of
Abraham,
Isaac and
Jacob and such like. Therefore
sacred doctrine is not a science.
On the contrary, Augustine says (De Trin. xiv, 1) “to this science alone belongs that whereby saving
faith is begotten, nourished, protected and strengthened.” But this can be said of no science except
sacred doctrine. Therefore
sacred doctrine is a science.
I answer that, Sacred doctrine is a science. We must bear in mind that there are two kinds of
sciences. There are some which proceed from a principle known by the
natural light of
intelligence, such as arithmetic and geometry and the like. There are some which proceed from principles known by the light of a higher science: thus the science of perspective proceeds from principles established by geometry, and music from principles established by arithmetic. So it is that
sacred doctrine is a science because it proceeds from principles established by the light of a higher science, namely, the science of
God and the
blessed. Hence, just as the musician accepts on authority the principles taught him by the mathematician, so
sacred science is established on principles
revealed by
God.
Reply to Objection 1. The principles of any science are either in themselves self-evident, or reducible to the conclusions of a higher science; and such, as we have said, are the principles of
sacred doctrine.
Reply to Objection 2. Individual facts are treated of in
sacred doctrine, not because it is concerned with them principally, but they are introduced rather both as examples to be followed in our lives (as in
moral sciences) and in order to establish the authority of those
men through whom the
divine revelation, on which this
sacred scripture or
doctrine is based, has come down to us.