Walk groundly, talk profoundly, drink roundly, sleep soundly.

This is the test and triumph of originality, not to show us what has never been, and what we may therefore very easily never have dreamt of, but to point out to us what is before our eyes and under our feet, though we have had no suspicion of its existence, for want of sufficient strength of intuition, of determined grasp of mind to seize and retain it.

Those who have had none of the cares of this life to harass and disturb them, have been obliged to have recourse to the hopes and fears of the next to vary the prospect before them.

The public have neither shame or gratitude.

I'm not smart, but I like to observe. Millions saw the apple fall, but Newton was the one who asked why.

The measure of any man's virtue is what he would do, if he had neither the laws nor public opinion, nor even his own prejudices, to control him.

Everything is in motion. Everything flows. Everything is vibrating.