Proof

Proofis sufficientevidenceorargumentfor thetruthof a proposition.

Quote

• "I refuse to prove that I exist," saysGod,"forproofdenies faith, and without faith, I amnothing."
  "Oh," says man, "but theBabel fishis a dead give-away, isn't it? It proves You exist, and so therefore You don't. "
  "Oh, I hadn't thought of that," says God, who promptly vanishes in a puff oflogic.
  "Ah, that was easy," says man, and for an encore goes on to prove that black is white, and gets killed on the next zebra crossing.
  Most leading theologians claim that this argument is a load of dingo's kidneys.
  • Douglas Adams,The Hitchhiker's Guide to the Galaxy(1979),Chapter 6

• PROOF, n. Evidence having a shade more of plausibility than of unlikelihood. Thetestimonyof two credible witnesses as opposed to that of only one.
  • Ambrose Bierce,The Devil's Dictionary(1911).

A very great deal moretruthcan becomeknownthan can be proven. ~Richard Feynman

• You may prove anything by figures.
  • Quoted byThomas Carlyle,Chartism,No. 2; reported inHoyt's New Cyclopedia Of Practical Quotations(1922), p. 636.

• A very great deal more truth can becomeknownthan can be proven.
  • Richard Feynman,in hisNobel Lecture "The Development of the Space-Time View of Quantum Electrodynamics" (11 December 1965)

• The being and existence of the thing itself, is what I call the original truth.A credible man vouching his knowledge of it is a good proof; but if another equally credible do witness it from his report, the testimony is weaker: and a third that attests the hearsay of an hearsay is yet less considerable. So that in traditional truths, each remove weakens the force of the proof: and the more hands the tradition has successively passed through, the less strength and evidence does it receive from them.
  • John LockeEsssay on Humane Understanding Book IV Chapter 17

• You cannot demonstrate anemotionor prove an aspiration.
  • John Morley,Rousseau(1876), p. 402.

• For when one's proofs are aptly chosen,
  Four are as valid as four dozen.
  • Matthew Prior,Alma(1718), Canto I. End.

• Proveallthings; hold fast that which isgood.
  • Paul of Tarsus,I Thessalonians5: 21.

• quod gratis asseritur, gratis negatur.
  • What is asserted gratuitously may be denied gratuitously.
  • Variant:What is asserted without proof (evidence, reason), may (can) be denied (dismissed) without proof (evidence, reason).
  • Anonymousmaxim, widely used since at least the early 19th century (e.g.The Classical Journal,Vol. 40 (1829),p. 312).

See also

• Evidence