by John Marshall Harlan, Beard v. United States — Opinion of the Court
“ Does the law hold a man who is violently and feloniously assaulted responsible for having brought such necessity upon himself on the sole ground that he failed to fly from his assailant when he might safely have done so? The law, out of tenderness for human life and the frailties of human nature, will not permit the taking of it to repel a mere trespass, or even to save life where the assault is provoked; but a true man, who is without fault, is not obliged to fly from an assailant, who by violence or surprise maliciously seeks to take his life, or to do him enormous bodily harm. ”
