A science which hesitates to forget its founders is lost.

In a sense, knowledge shrinks as wisdom grows, for details are swallowed up in principles. The details for knowledge which are important, will be picked up ad hoc in each avocation of life, but the habit of the active utilization of well-understood principles is the final possession of WISDOM.

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

One main factor in the upward trend of animal life has been the power of wandering.

Imagination is not to be divorced from the facts. It is a way of illuminating the facts.

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.

Aristotle discovered all the half-truths which were necessary to the creation of science.