_a._ As regards the methods of obtaining knowledge, the Sanc’hya says that there are three kinds of evidence possible: first of all, that of perception; secondly, that of inference; thirdly, that of affirmation, which is the origin of all others, such as reverence for authority, a teachable disposition, and tradition. Perception is said to require no explanation. Inference is a conclusion arrived at from the operation of cause and effect, by which one determination merely passes over into a second. There are three forms, because inferences are made either from cause to effect, from effect to cause, or in accordance with different relations of cause and effect. Rain, we may say, is foretold when a cloud is seen to be gathering; fire, when a hill is seen to be smoking; or the movement of the moon is inferred when, at different times, it is observed to be in different places. These are simple, dry relations, originating from the understanding. Under affirmation, tradition or revelation is understood, such as that of the orthodox Vedas; in a wider sense, immediate certainty or the affirmation in my consciousness, and in a less wide sense, an assurance through verbal communication or through tradition is so denominated. _b._ Of objects of knowledge or of principles, the Sanc’hya gives five-and-twenty; and these I will mention to show the want of order that is in them. 1. Nature, as the origin of everything, is said to be the universal, the material cause, eternal matter, undistinguished and undistinguishable, without parts, productive but without production, absolute substance. 2. Intelligence, the first production of Nature and itself producing other principles, distinguishable as three gods through the efficacy of three qualities, which are Goodness, Foulness and Darkness. These form one person and three gods, namely, Brahma, Vishnu, and Maheswara. 3. Consciousness, personality, the belief that in all perceptions and meditations I am present, that the objects of sense, as well as of intelligence, concern me, in short that I am I. It issues from the power of intelligence, and itself brings forth the following principles. 4-8. Five very subtle particles, rudiments or atoms, which are only perceptible to an existence of a higher order, and not through the senses of men; these proceed from the principle of consciousness, and bring forth on their own account the five elements—space and the first origination of earth, water, fire and air. 9-19. The eleven succeeding principles are the organs of feeling, which are produced by the personality. There are ten external organs, comprising the five senses and five active organs—the organs of the voice, hands and feet, the excretory and genital organs. The eleventh organ is that of the inward sense. 20 to 24. These principles are the five elements brought forth from the earlier-named rudiments—the ether which takes possession of space, air, fire, water and earth. 25. The soul.