There is one fact more to learn about this rising and falling. The seed comes out of the tree; it does not immediately become a tree, but has a period of inactivity, or rather, a period of very fine unmanifested action. The seed has to work for some time beneath the soil. It breaks into pieces, degenerates as it were, and regeneration comes out of that degeneration. In the beginning, the whole of this universe has to work likewise for a period in that minute form, unseen and unmanifested, which is called chaos, and; out of that comes a new projection. The whole period of one manifestation of this universe — its going down into the finer form, remaining there for some time, and coming out again — is, in Sanskrit, called a Kalpa or a Cycle. Next comes a very important question especially for modern; times. We see that the finer forms develop slowly and slowly, and gradually becomes grosser and grosser. We have seen that the cause is the same as the effect, and the effect is only the cause in another form. Therefore this whole universe cannot be produced out of nothing. Nothing comes without a cause, and the cause is the effect in another form.