Fools, like everything else, can be categorized.
A fool thinks himself to be wise, but a wise man knows himself to be a fool. ~ Shakespeare
Who's more foolish the fool or the fool who follows him. ~ Obi Wan Kenobi
Garden Variety Fools
Hain't we got all the fools in town on our side? And ain't that a big enough majority in any town? ~ Mark Twain
A fool's brain digests philosophy into folly, science into superstition, and art into pedantry. Hence University education. ~ George Bernard Shaw
A fool and his money are soon parted. ~ English proverb