This evil, which is of the devil, creeps in by all the sensual approaches;
he places himself in figures, he adapts himself to colours,
he lurks in angry and wrongful conversation, he abides in smells,
he impregnates with flavours and fills with certain exhalations all the channels of the understanding. Therefore it is seen that it is in the devil’s power to influence the will, which is directly the cause of sin."