Lo sasuru acharei eineichem (do not veer after your eyes). The Gemara (Talmud) tells us what this means is if a man looks at a woman for the person of being neheneh (enjoying) in a sexual manner, he violates a lo sa'asei (negative commandment) in the Torah. It's very important to understand what the Torah is teaching us. You see, the real battle of tayvah (desire) is way before it comes to fruition, way before it comes to an act. The real battle of desire is within the framework of my mind — not thinking about another woman; not thinking thoughts that are inappropriate. The real challenge isn't not acting, the real challenge is not thinking. And it's something that takes years and years and years of growth and work.