Only the one that hurts you can make you feel better. Only the one that inflicts pain can take it away.

Undeserved praise causes more pangs of conscience later than undeserved blame, but probably only for this reason, that our power of judgment are more completely exposed by being over praised than by being unjustly underestimated.

The bite of conscience, like the bite of a dog into a stone, is a stupidity.

All credibility, all good conscience, all evidence of truth come only from the senses.

To our strongest impulse, to the tyrant in us, not only our reason but also our conscience yields.

Whoever has witnessed another's ideal becomes his inexorable judge and as it were his evil conscience.