Moral codes adjust themselves to environmental conditions.

It is one of the most culpable oversights of nature that virtue and beauty so often come in separate packages.

We Americans are the best informed people on earth as to the events of the last twenty-four hours; we are the not the best informed as the events of the last sixty centuries.

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.

As knowledge grew, fear decreased; men thought less of worshiping the unknown, and more of overcoming it.

Underneath all civilization, ancient or modern, moved and still moves a sea of magic, superstition, and sorcery. Perhaps they will remain when the works of our reason have passed away.

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.