³1username³2LarrySanger³2name³2text_default³2version³21³2ts³2981075037³2ip³224.234.246.58³2data³2newauthor³31³3minor³30³3text³3A proposition and its denial cannot both be true at the same time and "in the same respect."  In other words: for any proposition P, it is not the case both that [P] is true and that [not-P] is true.

This is closely related though distinct from TheLawOfNoncontradiction and TheLawOfExcludedMiddle.
³3summary³3*³2tscreate³2981075037³2keepts³2981075322³2id³21001³2host³2dhcp058.246.lvcm.com³2revision³21³1username³2LarrySanger³2name³2text_default³2version³21³2ts³2981075322³2ip³224.234.246.58³2data³2text³3For any proposition P, either [P] is true or [P] is false; there are no propositions that are neither true nor false.

This is closely related though distinct from TheLawOfExcludedMiddle and TheLawOfNoncontradiction.
³3minor³30³3newauthor³30³3summary³3*³2tscreate³2981075037³2keepts³2981075963³2id³21001³2host³2dhcp058.246.lvcm.com³2revision³22