"We have learned that it is forbidden for a man to gaze at the beauty of a woman lest evil thoughts be provoked in him and he be incited to something worse. When Rabbi Shimon had to walk through the town, followed by his companions, when he came to a place where beautiful women were apt to be found, he would lower his eyes and say to them, 'Do not stray (after their gods!)' For whoever gazes at the beauty of a woman by day will have sinful thoughts at night. And if these thoughts overcome him, he transgresses the commandment, 'You shall not make for yourselves molten gods.'