It can truly be said: Men are the devils of the earth, and the animals are the tormented souls. - Arthur Schopenhauer

A spring never free from the pressure of some foreign body at last loses its elasticity; and so does the mind if other people’s thoughts are constantly forced upon it.

If children were brought into the world by an act of pure reason alone, would the human race continue to exist? Would not a man rather have so much sympathy with the coming generation as to spare it the burden of existence, or at any rate not take it upon himself to impose that burden upon it in cold blood?

Whatever torch we kindle, and whatever space it may illuminate, our horizon will always remain encircled by the depth of night.