The finest poetry was first experience.

All science has one aim, namely, to find a theory of nature.

When nature has work to be done, she creates a genius to do it.

If the aristocrat is only valid in fashionable circles, and not with truckmen, he will never be a leader in fashion; and if the man of the people cannot speak on equal terms with the gentleman, so that the gentleman shall perceive that he is already really of his own order, he is not to be feared.

I find that the Americans have no passions, they have appetites.

Little minds have little worries, big minds have no time for worries.

Art and power will go on as they have done,--will make day out of night, time out of space, and space out of time.