Principle of contradiction

Principle of contradiction
Principle Prin"ci*ple, n. [F. principe, L. principium beginning, foundation, fr. princeps, -cipis. See {Prince}.] 1. Beginning; commencement. [Obs.] [1913 Webster]

Doubting sad end of principle unsound. --Spenser. [1913 Webster]

2. A source, or origin; that from which anything proceeds; fundamental substance or energy; primordial substance; ultimate element, or cause. [1913 Webster]

The soul of man is an active principle. --Tillotson. [1913 Webster]

3. An original faculty or endowment. [1913 Webster]

Nature in your principles hath set [benignity]. --Chaucer. [1913 Webster]

Those active principles whose direct and ultimate object is the communication either of enjoyment or suffering. --Stewart. [1913 Webster]

4. A fundamental truth; a comprehensive law or doctrine, from which others are derived, or on which others are founded; a general truth; an elementary proposition; a maxim; an axiom; a postulate. [1913 Webster]

Therefore, leaving the principles of the doctrine of Christ, let us go on unto perfection. --Heb. vi. 1. [1913 Webster]

A good principle, not rightly understood, may prove as hurtful as a bad. --Milton. [1913 Webster]

5. A settled rule of action; a governing law of conduct; an opinion or belief which exercises a directing influence on the life and behavior; a rule (usually, a right rule) of conduct consistently directing one's actions; as, a person of no principle. [1913 Webster]

All kinds of dishonesty destroy our pretenses to an honest principle of mind. --Law. [1913 Webster]

6. (Chem.) Any original inherent constituent which characterizes a substance, or gives it its essential properties, and which can usually be separated by analysis; -- applied especially to drugs, plant extracts, etc. [1913 Webster]

Cathartine is the bitter, purgative principle of senna. --Gregory. [1913 Webster]

{Bitter principle}, {Principle of contradiction}, etc. See under {Bitter}, {Contradiction}, etc. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Principle of contradiction — Contradiction Con tra*dic tion, n. [L. contradictio answer, objection: cf. F. contradiction.] 1. An assertion of the contrary to what has been said or affirmed; denial of the truth of a statement or assertion; contrary declaration; gainsaying.… …   The Collaborative International Dictionary of English

  • Principle of contradiction — In logic, the Principle of contradiction ( principium contradictionis in Latin) is the second of the so called three classic laws of thought. The oldest statement of the law is that contradictory statements cannot both at the same time be true, e …   Wikipedia

  • principle of contradiction — law of contradiction * * * principle of contradiction noun The logical principle that a thing cannot both be and not be • • • Main Entry: ↑principle …   Useful english dictionary

  • Principle of explosion — The principle of explosion is the law of classical logic and a few other systems (e.g., intuitionistic logic) according to which anything follows from a contradiction i.e., once you have asserted a contradiction, you can infer any proposition, or …   Wikipedia

  • Principle of bivalence — In logic, the semantic principle of bivalence states that every proposition takes exactly one of two truth values (e.g. truth or falsehood ). The laws of bivalence, excluded middle, and non contradiction are related, but they refer to the… …   Wikipedia

  • law of contradiction — a principle in logic: a thing cannot at the same time both be and not be of a specified kind (as a table and not a table) or in a specified manner (as red or not red) * * * Logic. the law that a proposition cannot be both true and false or that a …   Useful english dictionary

  • History of the principle of inquisition in German criminal law — The principle of inquisition is a form of criminal proceeding developed in Italy, which is labeled by the axiom of the ex officio inquiery of a criminal issue. There is no obligation of the inquiry and the final decision to be executed by the… …   Wikipedia

  • sufficient reason, principle of — ▪ philosophy       in the philosophy of the 17th and 18th century philosopher Gottfried Wilhelm Leibniz (Leibniz, Gottfried Wilhelm), an explanation to account for the existence of certain monads despite their contingency. Having ascribed to… …   Universalium

  • non-contradiction, principle of — (or law of ) The law of logic that it is not the case that (p & not p ). Contradiction is the final logical stopping point: if we can derive a contradiction from a set of premises, then at least one of them is false (see reductio ad absurdum ).… …   Philosophy dictionary

  • indifference, principle of — The principle named (but rejected) by Keynes, whereby if there is no known reason for asserting one rather than another out of several alternatives, then relative to our knowledge they have an equal probability. Without restriction the principle… …   Philosophy dictionary

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