The thoughts you think will irradiate you as though you are a transparent vase.

Is not every action of Hamlet induced by a fanatical impulse, which tells him that duty consists in revenge alone? And dose it need superhuman efforts to recognize that revenge never can be duty? I say again that Hamlet thinks much, but that he is by no means wise.

(there is) no other means of escaping from one's consciousness than to deny it, to look upon it as an organic disease of the terrestrial intelligence - a disease which we must endeavor to cure by an action which must appear to us an action of violent and willful madness, but which, on the other side of our appearances, is probably an action of health. ("Of Immortality")

Happiness will never be any greater than the idea we have of it.

Many a happiness in life, a many a disaster, is due to chance alone; but the peace within us can never be governed by chance.

The value of ourselves is but the value of our melancholy and our disquiet.

Above all, let us never forget that an act of goodness is in itself an act of happiness. It is the flower of a long inner life of joy and contentment; it tells of peaceful hours and days on the sunniest heights of our soul.