In the following passage from the "Padma Purana", it is taught that Vishnu is the supreme cause, thus identifying him with Brahma, and also that his special work is to preserve: "In the beginning of creation, the great Vishnu, desirous of creating the whole world, became threefold; Creator, Preserver, Destroyer. In order to create this world, the Supreme Spirit produced from the right side of his body himself as Brahma; then, in order to preserve the world, he produced from his left side Vishnu; and in order to destroy the world, he produced from the middle of his body the eternal Shiva Some worship Brahma, others Vishnu, others Shiva; but Vishnu, one yet threefold, creates, preserves, and destroys: therefore let the pious makes no difference between the three." In pictures Vishnu is represented as a black man with four arms: in one hand he holds a club; in another a shell; in a third a chakra, or diseus, with which he slew his enemies; and in the fourth a lotus. He rides upon the bird Garuda, and is dressed in yellow robes. This deity is worshipped not only under the name and in the form of Vishnu, but also in one of his many incarnations. Whenever any great calamity occurred in the world, or the wickedness of any of its inhabitants proved an unbearable nuisance to the gods, Vishnu, as Preserver, had to lay aside his invisibility, come to earth in some form, generally human, and, when his work was done, he returned again to the skies. There is no certainty as to the number of times he has become incarnate. Ten is the commonly received number, and these are the most important ones. Of these ten, nine have already been accomplished; one, the Kalki, is still future. "Some of these Avatars are of an entirely cosmical character; others, however, are probably based on historical events, the leading personage of which was gradually endowed with divine attributes, until he was regarded as the incarnation of the deity himself." These are Fish (...