Who said the following? "what is isn't and what isn't is"

I can't remember where I picked up that line but I seem to remember hearing it being repeated by some fictional character, possibly cartoonish.

  • 1
    See Gorgias, "On Nature".
    – user3017
    Jan 28, 2018 at 16:33

1 Answer 1


To quote Aristotle “Affirming nonexistence of the extent, or existence of the nonexistent, is falsehood; but affirming existence of the existent, and nonexistence of the nonexistent, is truth.”

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