How the past perishes is how the future becomes.

Knowledge shrinks as wisdom grows.

Without adventure civilization is in full decay. ... The great fact [is] that in their day the great achievements of the past were the adventures of the past.

Philosophy begins in wonder. And, at the end, when philosophic thought has done its best, the wonder remains.

Life is complex in its expression, involving more than percipience, namely desire, emotion, will, and feeling.

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

The fixed person for the fixed duties who in older societies was such a godsend, in future will be a public danger.