We are what we repeatedly do. Excellence, then, is not an act, but a habit.

So the story of man runs in a dreary circle, because he is not yet master of the earth that holds him.

Every science begins as philosophy and ends as art; it arises in hypothesis and flows into achievement.

Knowledge that does not generate achievement is a pale and bloodless thing, unworthy of mankind.

Wherever men do things, other men will arise who will explain to them how things should be done.

Can a civilization hold together if man abandons his faith in God?

Civilizaton is the interval between Ice Ages.