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Proof is sufficient evidence or argument for the truth of a proposition.


A very great deal more truth can become known than can be proven. ~ Richard Feynman
  • You may prove anything by figures.
    • Quoted by Thomas Carlyle, Chartism, No. 2; reported in Hoyt's New Cyclopedia Of Practical Quotations (1922), p. 636.
  • You cannot demonstrate an emotion or prove an aspiration.
  • For when one's proofs are aptly chosen,
    Four are as valid as four dozen.
  • 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).
    • Anonymous maxim, widely used since at least the early 19th century (e.g. The Classical Journal , Vol. 40 (1829), p. 312).

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