The most instructive experiences are those of everyday life

No small art is it to sleep: it is necessary for that purpose to keep awake all day

And let that day be lost to us on which we did not dance once! And let that wisdom be false to us that brought no laughter with it!

Physiologists should think before putting down the instinct of self-preservation as the cardinal instinct of an organic being. A living thing seeks above all to discharge its strength--life itself is will to power; self-preservation is only one of the indirect and most frequent results.

Love of one is a piece of barbarism: for it is practised at the expense of all others. Love of God likewise.

The real world is much smaller than the imaginary