Moral sensibilities are nowadays at such cross-purposes that to one man a morality is proved by its utility, while to another its utility refutes it.

Philosophers are in the habit of setting themselves before life and experience.

It is not the strengths, but the durations of great sentiments that make great men.

To get into just those situations where sham virtues will not suffice, but rather where, as with the ropedancer on his rope, one either falls or stands--or gets down.

Unconsciously we seek the principles and opinions which are suited to our temperament, so that at last it seems as if these principles and opinions had formed our character and given it support and stability.

What is life? A continuous praise and blame.

What we call truths are just those errors that we cannot give up.