The spine has two ends: the beginning is the sex center and the end is SAHASRARA, the seventh center at the top of the head.
The beginning of the spine is attached to the earth, and sex is the most earthly thing in you. From the beginning center in your spine you are in contact with nature, with what Sankhya has called PRAKRATI -- the earth, the material.
From the last center, or the second pole, SAHASRAR, in the head, you are in contact with the divine.
Gurdjieff has prepared a group of dancers. The dancers created such a meditative energy, such a great wave of energy, that those who had come just to see the dance, suddenly forgot the dance completely. Something else was there by the side, a door opened through it.. (commentaries by osho)