My life is for itself and not for a spectacle.

In the uttermost meaning of the words, thought is devout, and devotion is thought. Deep calls unto deep.

The unstable estimates of men crowd to him whose mind is filled with a truth, as the heaped waves of the Atlantic follow the moon.

It is not length of life, but depth of life.

Circumstance does not make the man. Circumstance reveals man to himself.

No man can quite emancipate himself from his age and country, or produce a model in which the education, the religion, the politics, usages, and arts, of his times shall have no share.

The religion that is afraid of science dishonors God and commits suicide.