If it be true that nature is uniform throughout, if it be true, and so far no human experience has contradicted it, that the same method under which a small grain of sand is created, works in creating the gigantic suns and stars and all this universe, if it be true that the whole of this universe is built on exactly the same plan as the atom, if it be true that the same law prevails throughout the universe, then, as it has been said in the Vedas, "Knowing one lump of clay we know the nature of all the clay that is in the universe." Take up a little plant and study its life, and we know the universe as it is. If we know one grain of sand, we understand the secret of the whole universe. Applying this course of reasoning to phenomena, we find, in the first place, that everything is almost similar at the beginning and the end. The mountain comes from the sand, and goes back to the sand; the river comes out of vapour, and goes back to vapour; plant life comes from the seed, and goes back to the seed; human life comes out of human germs, and goes back to human germs. The universe with its stars and planets has come out of a nebulous state and must go back to it. What do we learn from this? That the manifested or the grosser state is the effect, and the finer state the cause.