Cesare Beccaria,
An Essay on Crimes and Punishments…
(1764)
“ That certainty which is necessary to decide that the accused is guilty, is the very same which determines every man in the most important transactions of his life. The proofs of a crime may be divided into two classes, perfect and imperfect. I call those perfect which exclude the possibility of innocence; imperfect, those which do not exclude this possibility. Of the first, one only is sufficient for condemnation ”
