Summa Theologica

We must now consider the virtue itself of faith, and, in the first place, faith itself; secondly, those who have faith; thirdly, the cause of faith; fourthly, its effects.

Under the first head there are eight points of inquiry:

(1) What is faith?

(2) In what power of the soul does it reside?

(3) Whether its form is charity?

(4) Whether living [formata] faith and lifeless [informis] faith are one identically?

(5) Whether faith is a virtue?

(6) Whether it is one virtue?

(7) Of its relation to the other virtues;

(8) Of its certitude as compared with the certitude of the intellectual virtues.