We come now to that proposition that in this process there is an involution and an evolution. All is evolved out of that indiscreet Nature; and then is involved again and becomes _Avyaktam_. It is impossible, according to the _Sânkhyas_, for any material thing to exist, which has not as its material some portion of consciousness. Consciousness is the material out of which all manifestation is made. The elucidation of this comes in our next lecture, but I will show how it can be proved. I do not know this table as it is, but it makes an impression; it comes to the eyes, then to the _indriyas_, and then to the mind; the mind then reacts, and that reaction is what I call the table. It is just the same as throwing a stone into a lake; the lake throws a wave against the stone; this wave is what we know. The waves coming out are all we know. In the same way the fashion of this wall is in my mind; what is external nobody knows; when I want to know it, it has to become that material which I furnish; I, with my own mind, have furnished the material for my eyes, and the something which is outside is only the occasion, the suggestion, and upon that suggestion I project my mind, and it takes the form of what I see. The question is, how do we all see the same things? Because we all have a part of this cosmic mind. Those who have mind will see the thing, and those who have not will not see it. This goes to show that since this universe has existed there has never been a want of mind, of that one cosmic mind. Every human being, every animal, is also furnished out of that cosmic mind, because it is always present and furnishing material for their formation. II PRAKRITI AND PURUSHA