Sanity

Sanity (from Latin: sānitās) refers to the soundness, rationality, and health of the human mind, as opposed to insanity. A person is sane if they are rational. In modern society, the term has become exclusively synonymous with compos mentis (Latin: compos, having mastery of, and Latin: mentis, mind), in contrast with non compos mentis, or insanity, meaning troubled conscience. A sane mind is nowadays considered healthy both from its analytical - once called rational - and emotional aspects. According to the writer G. K. Chesterton, sanity involves wholeness, whereas insanity implies narrowness and brokenness.

For other uses, see Sanity (disambiguation).
"Sound mind" redirects here. For the phrase "sound mind in a sound body", see Mens sana in corpore sano.
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