The door of bliss

The sages declare that the door of bliss, the highest centre of spiritual consciousness, technically known as Sahasrara, the thousand-petalled lotus, is situated in the centre of the brain. When the yogi’s mind, absorbed in meditation, reaches this centre, he realises his union with Brahman.

“The Self being unknown, all three states of the soul are but dreaming – waking, dreaming, and dreamless sleep. In each of these dwells the Self: the eye is his dwelling place while we wake, the mind is his dwelling place while we dream, the lotus of the heart is his dwelling place while we sleep the dreamless sleep.

Having entered into the guardians, he identified himself with them. He became many individual beings. Now, therefore, if an individual awake from his threefold dream of waking, dreaming and dreamless sleep, he sees no other than the Self. He sees the Self dwelling in the lotus of his heart as Brahman, omnipresent, and he declares: “I know Brahman!”

Aitareya upanishad.