Laws of Logic

Law of logic may refer to:

  • basic laws of Propositional Logic or First Order Predicate Logic
  • Laws of thought, which present first principles (arguably) before reasoning begins
  • Rules of inference, which dictate the valid use of inferential reasoning

Famous quotes containing the words laws of, laws and/or logic:

    The counting-room maxims liberally expounded are laws of the Universe. The merchant’s economy is a coarse symbol of the soul’s economy. It is, to spend for power, and not for pleasure.
    Ralph Waldo Emerson (1803–1882)

    I flatter myself [we] have in this country extinguished forever the ambitious hope of making laws for the human mind.
    James Madison (1751–1836)

    Neither Aristotelian nor Russellian rules give the exact logic of any expression of ordinary language; for ordinary language has no exact logic.
    Sir Peter Frederick Strawson (b. 1919)