This small sutra contains the essence of the Upanishadic vision
“[Om Purnam] is one of the most significant statements ever made anywhere on the earth at any time. It contains the whole secret of the mystic approach towards life. This small sutra contains the essence of the Upanishadic vision. Neither before nor afterwards has the vision been transcended; it still remains the Everest of human consciousness. And there seems to be no possibility of going beyond it.
The Upanishadic vision is that the universe is a totality, indivisible; it is an organic whole. The parts are not separate, we are all existing in a togetherness: the trees, the mountains, the people, the birds, the stars, howsoever far away they may appear – don’t be deceived by the appearance – they are all interlinked, all bridged. Even the smallest blade of grass is connected to the farthest star, and it is as significant as the greatest sun.
Nothing is insignificant, nothing is smaller than anything else. The part represents the whole just as the seed contains the whole.”