In the matter of belief, we are all extreme conservatives.

All our scientific and philosophic ideals are altars to unknown gods.

My thinking is first and last and always for the sake of my doing, and I can only do one thing at a time.

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.

To give up pretensions is as blessed a relief as to get them ratified.

Seek out that particular mental attribute which makes you feel most deeply and vitally alive.

Human beings can alter their lives by altering their attitudes of mind.