The divisions of science are not like different lines that meet in one angle, but rather like the branches of trees that join in one trunk.

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

Many secrets of art and nature are thought by the unlearned to be magical.

States are great engines moving slowly.

I work for posterity, these things requiring ages for their accomplishment.

Photographs are not only points of reference... they're often triggers of ideas.

There is no great concurrence between learning and wisdom.