So the first thing to be understood is that mind is an indirect process. Senses are direct: I can touch you with my hand, but I cannot touch you with my mind. I can see you through my eyes, but I cannot see you through my mind. Mind is enclosed within me and there is no bridge from the mind to reach you directly. If the mind wants to reach you directly, some medium will be needed. If the mind wants to see you, it will see through the eyes. To touch you, it will touch through the hands. A medium, an agency, a mediator, will be needed. Mind needs a mediator.
So whatsoever knowledge mind can give, it can never be immediate. This is one of the findings of the Eastern mind, that mind cannot give you immediate knowledge of anything. A mediator will be there and knowledge will come through a means, through a medium. There is no direct penetration from the mind into reality. Senses are direct, but they cannot recognize. Mind can recognize, but it is indirect. So unless mind and senses both are in a deep harmony, you cannot know reality.
Agni approached alone, Vayu approached alone, Indra approached alone. They all were failures. Brahman was present to Agni, but then Agni had no mind to think, to recognize, to remember; he could not come to any conclusion as to who he was. Indra could recognize, but he had no direct possibility to know who he was. The Brahman disappeared before the mind.
So the first thing: if mind is the way to know the reality, the reality will disappear. That is why for science there is no Brahman. Science is Indra – mind working. So science goes on denying. Science says there is no spirit in you, no atman, soul, and no Brahman, no cosmic soul, in the universe. This is a mental approach, abstract. But a very deep phenomenon happens in this parable: Brahman disappears and a woman, one of the most beautiful of women, Uma, appears.
Whenever mind tries to penetrate the mystery of life, Brahman will disappear and sex will appear. For the mind sex is the nearest to Brahman, the closest possibility to know the life force. Why? Sex is the nearest to the mind for many reasons. One, Brahman is the cosmic life force and sex is your individual life force. Brahman is outside you; sex is within you. To feel Brahman, senses will be needed. To understand sex, you can close your eyes and understand it. It is a reality within you. Or, you can say that the Brahman has penetrated you in the shape of sex. It has become sexual energy within you. It is the individual counterpart of the cosmic life force.
You can understand Brahman through mind only as sex. So whenever abstract thinking reaches to its climax, Brahman disappears and sex becomes the sole reality. It has happened before many times; it is happening right now in the contemporary world. It happened in India and because of that happening tantra was born. Tantra means to forget the Brahman completely; just penetrate the sexual energy to its very core and you will come to Brahman.
Tantra was born because India reached to an intellectual climax, to the same climax that now Western countries have reached. India has known that climax – the climax of conceptualization and philosophy. India reached to a very sophisticated state of mind where the Brahman disappeared and the life force became the sex force – appeared as the sex force.