The belief in authority is the source of conscience; which is therefore not the voice of God in the heart of man, but the voice of some men in man.

Once blasphemy again God was the greatest blasphemy; but God died, and thereupon those blasphemers died too.

The empty, the one, the unmoved, the full, satiation, wanting nothing--that would be my evil: in short, dreamless sleep.

Faith, indeed, has up to the present not been able to move real mountains, although I do not know who assumed that it could. But it can put mountains where there are none.

If you believed more in life you would fling yourself less to the moment.

But by my love and hope I beseech you: do not throw away the hero in your soul! Hold holy your highest hope!

The thought of suicide is a great source of comfort: with it a calm passage is to be made across many a bad night.