Commerce is the great civilizer. We exchange ideas when we exchange fabrics.

Christianity has made more lunatics than it ever provided asylums for.

Love your friends and be just to your enemies.

We have at last ascertained that miracles can be perfectly understood; that there is nothing mysterious about them; that they are simply transparent falsehoods.

To the wise man, to the wise nation, the mistakes of the past are the torches of the present.

I would rather that we all should go to eternal chaos, to black and starless night, than that just one soul should suffer eternal agony.

If, with all the time at my disposal, with all the wealth of the resources of this vast universe, to do with as I will, I could not produce a better scheme of life than now prevails, I would be ashamed of my efforts and consider my work a humiliating failure.