"Terrorism" is what we call the violence of the weak, and we condemn it; "war" is what we call the violence of the strong, and we glorify it.

History repeats itself, but in such cunning disguise that we never detect the resemblance until the damage is done.

Many people feel "guilty" about things they shouldn't feel guilty about, in order to shut out feelings of guilt about things they should feel guilty about.

Maturity begins when we're content to feel we're right about something without feeling the necessity to prove someone else wrong.

Ninety per cent of the world's woe comes from people not knowing themselves, their abilities, their frailties, and even their real virtues. Most of us go almost all the way through life as complete strangers to ourselves - so how can we know anyone else?

Intolerance is the most socially acceptable form of egotism, for it permits us to assume superiority without personal boasting.

The truest test of independent judgment is being able to dislike someone who admires us, and to admire someone who dislikes us.