Fools act on imagination without knowledge, pedants act on knowledge without imagination.
How the past perishes is how the future becomes.
A science which hesitates to forget its founders is lost.
It takes a very unusual mind to undertake the analysis of the obvious.
A student should not be taught more than he can think about.
A man really writes for an audience of about ten persons. Of course if others like it that is clear gain. But if those ten are satisfied he is content.
Every organism requires an environment of friends partly to shield it from violent changes and partly to supply it with its wants.
Education with inert ideas is not only useless it is above all things harmful.
The only use of a knowledge of the past is to equip us for the present.
Some of the finest moral intuitions come to quite humble people. The visiting of lofty ideas doesn't depend on formal schooling. Think of those Galilean peasants.
In the conditions of modern life the rule is absolute, the race which does not value trained intelligence is doomed.
The only justification in the use of force is to reduce the amount of force necessary to be used.
Life is an offensive directed against the repetitious mechanism of the universe.
The antithesis between a technical and a liberal education is fallacious. There can be no adequate technical education which is not liberal and no liberal education which is not technical.
Not ignorance, but ignorance of ignorance, is the death of knowledge.
Wisdom is the fruit of a balanced development.
Philosophy begins in wonder. And, at the end, when philosophic thought has done its best, the wonder remains.
The present contains all that there is. It is holy ground for it is the past and it is the future.
The deepest definition of youth is life as yet untouched by tragedy.
We think in generalities but we live in detail.