For a tree to become tall it must grow tough roots among the rocks.

The usual false conclusions of mankind are these: a thing exists, therefore it has a right to exist.

One's own self is well hidden from one's own self; of all mines of treasure, one's own is the last to be dug up.

There is no more dangerous error than that of mistaking the consequence for the cause.

When a man is ill his very goodness is sickly.

Whoever despises himself nonetheless respects himself as one who despises.

Man must become better and more evil.