He's a Blockhead who wants a proof of what heCan't PerceiveAnd he's a Fool who tries to make such aBlockhead believe.

If the fool would persist in his folly he would become wise.

Great Men & Fools do often me InspireBut the Greater Fool the Greater Liar.

A fool sees not the same tree that a wise man sees.

The selfish smiling fool, and the sullen frowning fool, shall be both thought wise, that they may be a rod.

It is the peculiar quality of a fool to perceive the faults of others, and to forget his own, ... You can't clear your own fields while you're counting the rocks on your neighbor's farm.