A degree of culture, and assuredly a very high one, is attained when man rises above superstitions and religious notions and fears, and, for instance, no longer believes in guardian angels or in original sin, and has also ceased to talk of the salvation of his soul.

No power can be maintained when it is only represented by hypocrites.

But it is the same with man as with the tree. The more he seeketh to rise into the height and light, the more vigorously do his roots struggle earthward, downward, into the dark and deep — into the evil.

Our vanity desires that what we do best should be considered what is hardest for us.

The secret of realizing the greatest fruitfulness and the greatest enjoyment of existence is: to live dangerously! Build your cities on the slopes of Vesuvius! Send your ships out into uncharted seas! Live in conflict with your equals and with yourselves! Be robbers and ravagers as soon as you ca not be rulers and owners, you men of knowledge! The time will soon past when you could be content to live concealed int he woods like timid deer!

What does not destroy me, makes me stronger.

Nobody is so constituted as to be able to live everywhere and anywhere; and he who has great duties to perform, which lay claim toall his strength, has, in this respect, a very limited choice. The influence of climate upon the bodily functionsextends so far, that a blunder in the choice of locality and climate is able not only to alienate a man from his actual duty, but also to withhold it from him altogether, so that he never even comes face to face with it.