Irving Copi

American logician

Irving Marmer Copi (July 28, 1917August 19, 2002) was an American philosopher, author and logician.

Symbolic LogicEdit

  • It is heartening to be able to end a textbook that has no prerequisites with a problem that has not yet been solved.


"The success of democracy depends, in the end, on the reliability of judgements we citizens make, and hence upon our capacity and determination to weigh arguments and evidence rationally."


"Language is the principal tool with which we communicate; but when words are used carelessly or mistakenly, what was intended to advance mutual understanding may in fact hinder it; our instrument becomes our burden."

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