Law of noncontradiction
The law of non-contradiction is a rule of logic. It states that if something is true, then the opposite of it is false. For example, if an animal is a cat, the same animal cannot be not a cat. Or, stated in logic, if +p, then not -p, +p cannot be -p at the same time and in the same sense. The law was stated as a principle of mathematical logic by Russell and Whitehead in Principia Mathematica.[1]
Ravi Zacharias has said most eastern philosophies reject the law of noncontradiction.[2] The law of non-contradiction is found in ancient Indian logic as a rule in the Shrauta Sutras, the writing of Pāṇini,[3] and the Brahma Sutras attributed to Vyasa. It was later elaborated on by medieval commentators such as Madhvacharya.[4] The idea of noncontradiction is rejected in some strands of Buddhism.
References
- ↑ Alfred North Whitehead, Bertrand Russell (1910), Principia Mathematica, Cambridge, pp. 116–117
- ↑ Zacharias, Ravi The Real Face of Atheism page 176
- ↑ Frits Staal. Universals: Studies in Indian Logic and Linguistics (1988)Chicago. p. 109–28. (cf. Bull, Malcolm. Seeing Things Hidden (1999)Verso. p. 53. ISBN 1-85984-263-1.)
- ↑ Dasgupta, Surendranath. A History of Indian Philosophy (1991)Motilal Banarsidass. p. 110. ISBN 81-208-0415-5.