Just like we are learning about Buddha's method, it will be good to understand another method, one more method. Tantra has used sex. That is again another very vital force. If you want to go deep, you have to use very vital forces -- the deepest in you. Tantra uses sex. When you are in a sex act, you are very near to the center of creation -- to the very source of life. If you can go into a sex act consciously, it becomes meditation. It is very difficult -- more difficult than breath. You can breathe consciously in a small measure, of course, that you can, but the very phenomenon of sex requires your unconsciousness. If you become conscious, you will lose your sexual desire and lust. If you become conscious, then there will be no sexual desire inside. So Tantra has done the most difficult thing in the world. In the history of experiments with consciousness, Tantra goes the deepest. But, of course, one can deceive, and with Tantra deception is very easy, because no one other than you knows what the fact is. No one else can know. But only one in a hundred can succeed in the Tantric method of awareness -- because sex needs unconsciousness. So a Tantric, a disciple of Tantra, has to work with sex, sex desire, just like with breathing. He has to be conscious of it; when actually going into the sex act, he has to be conscious. Your very body, the sex energy, comes to a peak to explode. The Tantric SADHAK -- seeker -- comes to the peak consciously, and there is a method to judge. If sex release happens automatically and you are not the master, then you are not conscious of it. Then the unconscious has taken over. Sex comes to a peak, and then you cannot do anything but release. That release is not done by you. You can start a sexual process, but you can never end it. The end is always taken over by the unconscious. If you can retain the peak and if it becomes your conscious act to release it or not to release it, if you can come back from the peak without release or if you can maintain that peak for hours together, if it is your conscious act, then you are the master. And if someone can come to a sexual peak, just on the verge of orgasm, and can retain it and be conscious of it, suddenly he becomes aware of the deepest center inside -- SUDDENLY! And it is not only that he is aware of the deepest center inside of himself: he is also aware of the center of his partner, the deepest center. That is why a Tantra practitioner, if he is a man, will always worship the partner. The partner is not just a sex object. She is Divine! She is a goddess! And the act is not carnal at all. If you can go into it consciously, it is the deepest spiritual act possible. But the deepest is bound to be virtually impossible. So use either breath or sex.