[Montaigne], "of Conscience":

:To tell the truth, torture is a means full of uncertainty and danger. What would a man not say, what would a man not do, to escape such grievous pains?

:Pain forces even the innocent to lie. -- Publilius Syrus

:Whence it happens that the man whom the judge has tortured so as not to make him die innocent, is made to die both innocent and tortured. Thousands and thousands have thus loaded their head with false confessions.