All spiritual interests are supported by animal life.

It is pathetic to observe how lowly the motives are that religion, even the highest, attributes to the deity... To be given the best morsel, to be remembered, to be praised, to be obeyed blindly and punctiliously - these have been thought points of honor with the gods.

The loftiest edifices need the deepest foundations.

All language is rhetorical, and even the senses are poets.

The mediocrity of everything in the great world of today is simply appalling. We live in intellectual slums.

Self-assurance is contemptible and fatal unless it is self-knowledge.

Man is not made to understand life, but to live it.