I have talked about a hundred and twelve techniques. There are a hundred and twelve techniques – different, but if you go deeply, the same. The difference is only of appearance, of structure. And the difference is based not on the technique itself but on the particular person who is going to apply it. One example may make it clear to you.
There are people who are intellectuals – intellectual in the sense that their intellect is more functioning than their emotions. They cannot feel directly. First they will think and then they can feel. Even if they love, they think that they feel love. Thinking must be there; it cannot be dropped. They cannot come to any feeling immediately without the mind. The mind is always there.
There are people who are emotional. They cannot even think without feeling. They must feel first. Even if they are solving a mathematical puzzle they will say, “I feel like this. Do it like this! I feel like this.” No reason is given: “I feel that it is like this.” Feeling is uppermost.
So those who are intellect-oriented, for them emotional methods will not do, because intellect must go through reason, and emotion must go through faith. Emotion cannot doubt; reason cannot trust. Even if it trusts, it trusts only because it has found that there is no reason to disbelieve. The trust is just a logical conclusion: “I should believe because there is no reason to disbelieve.”
With an intellectual person, the trust is negative. It is always negative, it is never positive. It is not that trust has flowered in him; it is just a reasoning process: “Because I cannot disbelieve, because there is no reason to disbelieve, I believe.” It is just like a defeat. For the intellectual person to trust is just like a defeat. He feels it, and he will go on trying in so many ways to overcome it. He will create some doubt again, and then he will be at ease. The intellect is always at ease with doubt. It is never at ease with trust.
The emotional person is always at ease with trust and never at ease with doubt. It is inconceivable to doubt. Reason doubts, emotion trusts. So the techniques cannot be the same.
So for an intellectual person, the technique is going to be through doubt, and the technique must be such that it can use doubt. If it cannot use doubt it cannot be applied to an intellectual person: it must use doubt.
For example, in the Middle Ages in Europe, Descartes used doubt as a technique toward faith. He began thinking, “I must not trust unless there is no reason left which can create any doubt. I must go on doubting unless the point comes where I cannot doubt.”