Each human being is a more complex structure than any social system to which he belongs.

Every philosophy is tinged with the coloring of some secret imaginative background, which never emerges explicitly into its train of reasoning.

The task of a university is the creation of the future, so far as rational thought and civilized modes of appreciation can affect the issue.

Science repudiates philosophy. In other words, it has never cared to justify its truth or explain its meaning.

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.

I consider Christian theology to be one of the great disasters of the human race.

Do not teach too many subjects and what you teach, teach thoroughly.