Knowledge shrinks as wisdom grows.

Culture is activity of thought, and receptiveness to beauty and humane feeling. Scraps of information have nothing to do with it. A merely well informed man is the most useless bore on God's earth.

It is not paradox to say that in our most theoretical moods we may be nearest to our most practical applications.

Not ignorance, but ignorance of ignorance, is the death of knowledge.

I have always noticed that deeply and truly religious persons are fond of a joke, and I am suspicious of those who aren't.

The absolute pacifist is a bad citizen; times come when force must be used to uphold right, justice and ideals.

Every organism requires an environment of friends, partly to shield it from violent changes, and partly to supply it with its wants.