Hypothetical Syllogism - Proof

Famous quotes containing the word proof:

“He who has never failed somewhere, that man can not be great. Failure is the true test of greatness. And if it be said, that continual success is a proof that a man wisely knows his powers,—it is only to be added, that, in that case, he knows them to be small.”
—Herman Melville (1819–1891)

“Talk shows are proof that conversation is dead.”
—Mason Cooley (b. 1927)

“Right and proof are two crutches for everything bent and crooked that limps along.”
—Franz Grillparzer (1791–1872)