The stream of thought flows on; but most of its segments fall into the bottomless abyss of oblivion. Of some, no memory survives the instant of their passage. Of others, it is confined to a few moments, hours or days. Others, again, leave vestiges which are indestructible, and by means of which they may be recalled as long as life endures.

It is only by risking our persons from one hour to another that we live at all.

The word 'cause' is an altar to an unknown god.

Choose a self and stand by it.

It is only the fundamental conceptions of psychology which are of real value to a teacher.

Each of us literally chooses, by his way of attending to things, what sort of universe he shall appear to himself to inhabit.

No matter how full a reservoir of maxims one may possess, and no matter how good one's sentiments may be, if one has not taken advantage of every concrete opportunity to act, one's character may remain entirely unaffected for the better.