That lies should be necessary to life is part and parcel of the terrible and questionable character of existence.

Whenever I climb I am followed by a dog called 'Ego'.

A book full of brilliance imparts some of it even to its opponents.

Nothing can be done about it: every master has but a single pupil--and he will not stay loyal to him--for he is also destined to become a master.

Freedom of opinion is like health; both are individual, and no good general conception can be set up of either of them.

In affability there is no hatred of men, but for that very reason there is all too much contempt for men.

Morality makes stupid.- Custom represents the experiences of men of earlier times as to what they supposed useful and harmful - but the sense for custom (morality) applies, not to these experiences as such, but to the age, the sanctity, the indiscussability of the custom. And so this feeling is a hindrance to the acquisition of new experiences and the correction of customs: that is to say, morality is a hindrance to the development of new and better customs: it makes stupid.