The greatest obstacle to progress is not man's inherited pugnacity, but his incorrigible tendency to parasitism.

Faith is an act of self-consecration, in which the will, the intellect, and the affections all have their place.

Nobody is bored when he is trying to make something that is beautiful or to discover something that is true.

We tolerate shapes in human beings that would horrify us if we saw them in a horse.

The whole of creation, with all of its laws, is a revelation of God.

For better or worse, man is the tool-using animal, and as such he has become the lord of creation. When he is lord also of himself, he will deserve his self-chosen title homo sapiens.

Let none of us delude himself by supposing that honesty is always the best policy. It is not.