There is a difference between happiness and wisdom: he that thinks himself the happiest man is really so; but he that thinks himself the wisest is generally the greatest fool.

In nature things move violently to their place, and calmly in their place.

I use all sorts of things to work with: old brooms, old sweaters, and all kinds of peculiar tools and materials... I paint to excite myself, and make something for myself.

In order for the light to shine so brightly, the darkness must be present.

...to invent is to discover that we know not, and not to recover or resummon that which we already know

There is nothing more certain in nature than that it is impossible for any body to be utterly annihilated.

There is in human nature generally more of the fool than of the wise.