The souls who have opened their eyes fully to the angelic plane and became interested in that plane have remained there, and the inhabitants of that plane may be called angels. The souls who did not open their eyes fully there only passed through it, and if they became interested in the plane of the genius they remained there. The ancient people called them jinn or genii. The souls who went still further towards manifestation and reached the physical plane, the ultimate call of their destiny, opened their eyes there and became interested in the physical plane. Among all living beings human beings are the most widely awake.