The earth has a skin and that skin has diseases; one of its diseases is called man.

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.

If you are too weak to give yourselves your own law, then a tyrant shall lay his yoke upon you and say: "Obey! Clench your teeth and obey!" And all good and evil shall be drowned in obedience to him.

"State," I call it, where they all drink poison, the good and the wicked; "state," where they all lose themselves, the good and the wicked; "state," where they all call their slow suicide-"life."

And so, onwards... along a path of wisdom, with a hearty tread, a hearty confidence.. however you may be, be your own source of experience. Throw off your discontent about your nature. Forgive yourself your own self. You have it in your power to merge everything you have lived through- false starts, errors, delusions, passions, your loves and your hopes- into your goal, with nothing left over.

There is no better soporific and sedative than skepticism.

We talk about taking "pleasure in a thing": but in truth it is pleasure in ourselves, mediated by a thing.