To say nothing, especially when speaking, is half the art of diplomacy.

Those who know nothing about history are doomed forever to repeat it.

The time when you need to do something is when no one else is willing to do it, when people are saying it can't be done.

Christianity did not destroy paganism; it adopted it.

Those who have suffered much become very bitter or very gentle.

Men decided that it was better to pay taxes than to fight among themselves; better to pay tribute to one magnificent robber than to bribe them all.

Does history warrant the conclusion that religion is necessary to morality - that a natural ethic is too weak to withstand the savagery that lurks under civilization and emerges in our dreams, crimes and wars? ... There is no significant example in history, before our time, of a society successfully maintaining moral life without the aid of religion.