Samsara-the Wheel of Existence, literally, the "Perpetual Wandering"-is the name by which is designated the sea of life ever restlessly heaving up and down, the symbol of this continuous process of ever again and again being born, growing old, suffering, and dying. (It) is constantly changing from moment to moment, (as lives) follow continuously one upon the other through inconceivable periods of time. Of this Samsara, a single lifetime constitutes only a vanishingly tiny fraction.