It is therefore correct to say that the senses do not err — not because they always judge rightly, but because they do not judge at all.

Immaturity is the incapacity to use one's intelligence without the guidance of another.

All perception is colored by emotion.

Reason must approach nature in order to be taught by it. It must not, however, do so in the character of a pupil who listens to everything that the teacher chooses to say, but of an appointed judge who compels the witness to answer questions which he has himself formulated.

The sum total of all possible knowledge of God is not possible for a human being, not even through a true revelation. But it is one of the worthiest inquiries to see how far our reason can go in the knowledge of God.

Science is organized knowledge. Wisdom is organized life.

In the mere concept of one thing it cannot be found any character of its existence.