Enrico Ferri,
Criminal Sociology
“ Every man, however pure and honest he may be, is conscious now and then of a transitory notion of some dishonest or criminal action. But with the honest man, exactly because he is physically and morally normal, this notion of crime, which simultaneously summons up the idea of its grievous consequences, glances off the surface of the normal conscience, and is a mere flash without the thunder. With the man who is less normal and has less forethought, the notion dwells, resists the weak repulsion of a not too vigorous moral sense, and finally prevails ”
