Sound Mind
Defined in 2 dictionaries — Cyclopedic (1922), Bouvier (1914)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
That state of a man's mind which is adequate to reason, and comes to a judgment upon ordinary subjects like other rational men.
Bouvier's Law Dictionary and Concise Encyclopedia
John Bouvier; revised by Francis Rawle · 1914
That state of a man’s other rational men. 2 Hamilton, Syst Leg. Med. 28. The law presumes that every person who has acquired his full age is of sound mind, and, consequently, competent to make contracts and perform all his civil duties; and he who asserts to the contrary must prove the affirmation of his position by explicit evidence, and not by conjectural proof; 2 Hagg. Eccl. *434; 3 Add. Eccl. 86; Boyd v. Eby, 8 Watts (Pa.) 66; Ray, Med. Jur. § 92; 3 Curt. Eccl. 671. *