In a living society every day is a day of judgment; and its recognition as such is not the end of all things but the beginning ofa real civilization.

The great secret...is not having bad manners or good manners...but having the same manner for all human souls.

Choose silence of all virtues, for by it you hear other men's imperfections, and conceal your own.

A newspaper, not having to act on its descriptions and reports, but only to sell them to idly curious people, has nothing but honor to lose by inaccuracy and non-veracity.

I ... must continue to strive for more knowledge and more power, though the new knowledge always contradicts the old and the new power is the destruction of the fools who misuse it.

There is nothing more dangerous than the conscience of a bigot.

When commenting on the turmoil and disorder of the world, If the other planets are inhabited, they must be using this earth as their insane asylum.