As we get close to Kabbalas Hatorah, we complete this series with one final, fundamental element of man that distinguishes him from animals. Man has a neshama, a piece of Hashem that transcends anything on this physical earth. When a person makes decisions objectively, guided by his neshama, he is connecting to Hashem's Torah, and focusing on his real purpose. The nazir separates himself from pleasures in this world in order to be "neshama focused". Although we are supposed to enjoy this world, we need to ensure that it does not distract us from our real purpose, and from allowing our neshama to give us eternal life.