If the hill will not come to Mahomet, Mahomet will go to the hill.

...neither is it possible to discover the more remote and deeper parts of any science, if you stand but upon the level of the same science, and ascend not to a higher science.

To be free minded and cheerfully disposed at hours of meat and sleep and of exercise is one of the best precepts of long lasting.

I regret not starting to paint earlier...It is one of the few things I do regret.

The monuments of wit survive the monuments of power.

It would be unsound fancy and self-contradictory to expect that things which have never yet been done can be done except by means which have never yet been tried.

Lies are sufficient to breed opinion, and opinion brings on substance.