Disjunction Elimination - Proof

Famous quotes containing the word proof:

“There is no better proof of a man’s being truly good than his desiring to be constantly under the observation of good men.”
—François, Duc De La Rochefoucauld (1613–1680)

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

“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)