Until one has loved an animal a part of one's soul remains unawakened.

That child whose mother has never smiled upon him is worthy neither of the table of the gods nor the couch of the goddesses.

God, conquered, will become Satan; Satan, conquering, will become God. May the fates spare me this terrible lot; I love the Hell which formed my genius. I love the Earth where I have done some good, if it be possible to do any good in this fearful world where beings live but by rapine.

An education which does not cultivate the will is an education that depraves the mind.

When a history book contains no lies it is always tedious.

I cling to my imperfection, as the very essence of my being.

Do not try to satisfy your vanity by teaching a great many things. Awaken people's curiosity. It is enough to open minds; do not overload them. Put there just a spark. If there is some good inflammable stuff, it will catch fire.