Some people feel with their heads and think with their hearts.

If it were true what in the end would be gained? Nothing but another truth. Is this such a mighty advantage? We have enough old truths still to digest, and even these we would be quite unable to endure if we did not sometimes flavor them with lies.

Men still have to be governed by deception.

I have never yet met anyone who did not think it was an agreeable sensation to cut tinfoil with scissors.

Be attentive, feel nothing in vain, measure and compare: this is the whole law of philosophy.

Most subjects at universities are taught for no other purpose than that they may be re-taught when the students become teachers.

The human tendency to regard little things as important has produced very many great things.