Every genius is a great child; he gazes out at the world as something strange, a spectacle, and therefore with purely objective interest

With health, everything is a source of pleasure; without it, nothing else, whatever it may be, is enjoyable...Healt h is by far the most important element in human happiness.

No one can transcend their own individuality.

Reading is equivalent to thinking with someone else's head instead of with one's own.

The alchemists in their search for gold discovered many other things of greater value.

Life is a task to be done. It is a fine thing to say defunctus est; it means that the man has done his task.

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?