Cogito cogito ergo cogito sum -- "I think that I think, therefore I think that I am;" as close an approach to certainty as any philosopher has yet made.
Ambrose BierceREVIEW, v.t. To set your wisdom (holding not a doubt of it./ Although in truth there's neither bone nor skin to it)/ At work upon a book, and so read out of it/ The qualities that you have first read into it.
Ambrose BiercePALM, n. A species of tree . . . of which the familiar "itching palm" ("Palma hominis") is most widely distributed . . . . This noble vegetable exudes a kind of invisible gum, which may be detected by applying to the bark a piece of gold or silver.
Ambrose Bierce