Beware being right with a passion...

In a heated argument we are apt to lose sight of the truth.

— Publilius Syrus

Truth often suffers more by the heat of its defenders, than from the arguments of its opposers.

— William Penn

Talent

Mediocrity knows nothing higher than itself; but talent instantly recognizes genius.

~ Sir Arthur Conan Doyle

Let a fool hold his tongue and he will pass for a sage.

~ Publius Syrus

(editor's note: if you get from the second one that it's foolish to be silent, you should read it again... -K)