means literally a "wandering to and fro," that is, the cycle of births through which each soul must everlastingly pass from infinite time, and Karma means the "acts" of each soul. Each work or act performed by a living being is of a certain degree of righteousness or unrighteousness, and it is requited by a future experience of corresponding pleasure or pain. So every birth and ultimately every experience of a soul is determined by the righteousness of its previous acts; and there is no release for the soul from this endless chain of causes and effects unless it can find some supernatural way of deliverance. The Aupanishadas point to what they believe to be the only way: it is the Brahma-knowledge of the enlightened sage, which releases his soul from the chain of natural causation and raises him to everlasting union with Brahma.
The teaching of the Upanishads has had two very different practical results. On the one hand, it has moved many earnest thinkers to cast off the ties of the world and to wander about as homeless beggars, living on alms and meditating and discoursing upon the teachings of the Upanishads, while they await the coming of death to release their souls from the prison of the flesh and bring it to complete and eternal union with Brahma. These wandering ascetics — sannyāsīs, bhikshus, or parivrājakas they are called — form a class by themselves, which is
