Discipline yourself into deep awareness, so that you are cut off from the mind. If you can have only a single moment of this cut-offness, the first satori has happened. In the second satori you become capable of cutting off from the mind whenever you want. In the first satori it happens accidentally: meditating, watching, one day it happens almost like an accident. You were groping in the dark and you have stumbled upon the door. The first satori is a stumbling on the door.
The second satori is becoming perfectly aware where the door is, and whenever you want to, you can go to the door -- whenever you want to go. Even in the marketplace, surrounded by all the clamor of the market, you can go to the door. Suddenly you can become cut off.
And the third satori is when you are absolutely cut off, so that even if you want to join with the mind, you cannot. You can use it like a machine, separate from you, but even in your deep sleep you are not identified with it.
These are the three satoris, three samadhis. First, accidental stumbling; second, becoming more deliberate, conscious in reaching to the door; and third, becoming attuned so deeply with the door that you never lose track of it, that it is always there, always open. This is the state called satori in Japan, samadhi in India. In English it is translated as ecstasy.
That word is beautiful; literally it means "standing out." Ecstasy means standing out, standing out of the mind.