The news that reaches your consciousness is incomplete and often not to be relied on.... Turn your eyes inward, look into your own depths, learn first to know yourself!

I am actually not at all a man of science, not an observer, not an experimenter, not a thinker. I am by temperament nothing but a conquistador

The communal life of human beings had . . . a two-fold foundation: the compulsion to work, which was created by external necessity, and the power of love.

The mind is like an iceberg, it floats with one-seventh of its bulk above water.

[The child] takes his play very seriously and he expends large amounts of emotion on it. The opposite of play is not what is serious but what is real.

Man has, as it were, become a kind of prosthetic God.

Christmas is the alcoholidays