Value is coextensive with reality.

The future belongs to those who can rise above the confines of the earth.

The justification for a university is that it preserves the connection between knowledge and the zest of life, by uniting the young and the old in the imaginative consideration of learning.

In a sense, knowledge shrinks as wisdom grows: for details are swallowed up in principles.

Fundamental progress has to do with the reinterpretation of basic ideas.

Speak out in acts; the time for words has passed, and only deeds will suffice.

There are two principles inherent in the very nature of things, recurring in some particular embodiments whatever field we explore - the spirit of change, and the spirit of conservation. There can be nothing real without both. Mere change without conservation is a passage from nothing to nothing. . . . Mere conservation without change cannot conserve. For after all, there is a flux of circumstance, and the freshness of being evaporates under mere repetition.