'''Sanity''' (san′ə tē, from [[Latin]]: sānitās) refers to the soundness, [[rationality]] and reasonableness of the [[human]] [[mind]]. A [[person]] is sane (sān) if they are [[rational]]. In modern [[society]], the terms have become exclusively synonymous with compos mentis (Latin: compos, having mastery of, and mentis, mind), in contrast with non compos mentis, or insane. | '''Sanity''' (san′ə tē, from [[Latin]]: sānitās) refers to the soundness, [[rationality]] and reasonableness of the [[human]] [[mind]]. A [[person]] is sane (sān) if they are [[rational]]. In modern [[society]], the terms have become exclusively synonymous with compos mentis (Latin: compos, having mastery of, and mentis, mind), in contrast with non compos mentis, or insane. |