To attain perfect knowledge you must become indifferent to time; you should discern eternity in every moment; and you should discern every moment in eternity. And you must become indifferent to space; you should discern infinity in every point, and you should discern every point in infinity. At the moment when you transcend time, you enter eternity. And at the place where you transcend space, you enter infinity. When you enter eternity and infinity, you are completely isolated, and utterly at one.
Patanjali, Yoga Sutra 3