Those you cannot teach to fly, teach to fall faster.

Everything is the same, nothing is worthwhile, the world is senseless, knowledge strangles.

He who has a why to live can bear almost any how.

An educator never says what he himself thinks, but only that which he thinks it is good for those whom he is educating to hear.

To go on vegetating in cowardly dependence on physicians and machinations, after the meaning of life, the right to life, has been lost, that ought to prompt a profound contempt in society.

Having become conscious of the truth he once perceived, man now sees only the awfulness or the absurdity of existence, he now understands the symbolic element in Ophelia's fate, he now recognizes the wisdom of the woodland god, Silenus: it nauseates him.

Envy and jealousy are the private parts of the human soul. Perhaps the comparison can be extended.