Lao Tzu is not mathematical at all, yet he is very, very logical in his madness. He has a mad logic! When we penetrate into his sayings you will come to feel it; it is not so obvious and apparent. He has a logic of his own: the logic of absurdity, the logic of paradox, the logic of a madman. He hits hard.
To understand Lao Tzu's logic you will have to create eyes. It is very subtle, it is not the ordinary logic of the logicians -- it is the logic of a hidden life, a very subtle life. Whatsoever he says is on the surface absurd; deep down there lives a very great consistency. One has to penetrate it; one has to change his own mind to understand Lao Tzu.
When you try to understand Lao Tzu he zigzags. Sometimes you see him going towards the east and sometimes towards the west, because he says east is west and west is east, they are together, they are one. He believes in the unity of the opposites. And that is how life is.
So Lao Tzu is just a spokesman of life. If life is absurd, Lao Tzu is absurd; if life has an absurd logic to it, Lao Tzu has the same logic to it. Lao Tzu simply reflects life. He doesn't add anything to it, he doesn't choose out of it; he simply accepts whatsoever it is.