Hypothetical Syllogism - Proof

Famous quotes containing the word proof:

“A short letter to a distant friend is, in my opinion, an insult like that of a slight bow or cursory salutation—a proof of unwillingness to do much, even where there is a necessity of doing something.”
—Samuel Johnson (1709–1784)

“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)