"It may be assumed as an axiom that Providence has never gifted any political party with all of political wisdom or blinded it with all of political folly."

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The maxim is, that whatever can be affirmed (or denied) of a class, may be affirmed (or denied) of everything included in the class. This axiom, supposed to be the basis of the syllogistic theory, is termed by logicians the dictum de omni et nullo.

— John Stuart Mill