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Reasonable understanding; sound mind; possessing mental faculties that are capable of distinguishing right from wrong so as to bear legal responsibility for one's actions.

West's Encyclopedia of American Law, edition 2. Copyright 2008 The Gale Group, Inc. All rights reserved.

SANITY, med. jur. The state of a person who has a sound understanding; the reverse of insanity.
     2. The sanity of an individual is always presumed. 5 John. R. 144; 1 Pet. R. 163; 1 Hen. & M. 476; 4. Cowen, R. 207; 4 W. C. C. R. 262. See 9 Conn. 102; 9 Mass. 225; 3 Mass. 336 1 Mass. 71; 8 Mass. 371; 8 Greenl. 42; 15 John. 503; 4 Pick. 32.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
The next chapter looks at sanity and insanity, in which Bradford highlights the question raised by Laing and Thomas Szasz many years earlier.
Cassius Jackson Keyser said of Korzybski's Science and Sanity that it was 'beyond all comparison the most momentous single contribution that has ever been made to our knowledge and understanding of what is essential and distinctive in the nature of Man.' (Scripta Mathematica, 2.259-260, 1934.) General semantics as a method, the non-aristotelian orientation as an aim, and all else in Korzybski's contributions flow from his central definition of man as time-binder.
"I suspect," he wrote in a letter, "more damage has been done to my sanity in jail, in months; than years, decades, in the woods."
So why should my favorite magazine, Vanity Fair, seek special sanity? The March Hollywood issue delves deeply into the celebrity "feud'' with the Oscar-winning Gwyneth Paltrow, who somehow became one of the untouchables.
The selections come from the editorial work of Korzybski himself, who heeded the advice of teachers and students that his original Science and Sanity proved too much for too many in its 927 pages.
The step towards sanity consists of the fact that regulated activity no longer includes health care delivered by a person who is not a registrant.
The characterizations, aside from the nice bit about questioning their sanity, are thin and interchangeable.
Constitution; (3) roots and fruit of destructive American socialism; (4) how Americans are psychologically manipulated; (5) how to restore American liberties and sanity.
So today, I'd like to take you through a few tips tricks to help you retain your sanity while you don't look for work.
Summary: RAS AL KHAIMAH -- The RAK police is investigating the mysterious death of a 16-year-old Emirati boy on Thursday evening who first lost sanity for a short time before dying in the Al Dhait area.
Thousands of people gathered at the National Mall in Washington, D.C., on the weekend before midterm elections for the Rally to Restore Sanity and/or Fear, a production of Comedy Central's Jon Stewart and Stephen Colbert.