Now, that is a general law for healthy evolution.

You will see the importance of this law a little further on.

Every body which we possess--physical, astral, mental, buddhic--is always built up by consciousness working in the plane next above it; the next plane, or world, is a world very much more "next" than you are next each other sitting here--not far away beyond the stars, removed by great spaces.

It is interpenetrating you in every portion of your being.

It is only "next" in the sense that the solids, liquids, and gases of your bodies are next each other in the body--not far away, but here.