The finest and healthiest thing about science is, as in the mountains, the brisk air blowing around in it.--The spiritually delicate (such as artists) shun and slander science owing to this air.

The way to transmute your iron duty into gold in everyone's eyes is this: always deliver more than you promise.

If one seeks relief from unbearable pressure, one is to eat hashish.

A bad conscience is easier to cope with than a bad reputation.

Here one must think profoundly to the very basis and resist all sentimental weakness: life itself is essentially appropriation, injury, conquest of the strange and weak, suppression, severity, obtrusion of peculiar forms, incorporation, and at the least, putting it mildest, exploitation - but why should one for ever use precisely these words on which for ages a disparaging purpose has been stamped?

One must know how to conserve oneself- the best test of independence.

It is the evening that questions thus from within me.