When the lunar chain came to its end the humanity upon it stood at various levels.

Not Adeptship, but what is now for us the fourth step on the Path, was the goal appointed for that chain.

Those who had attained it (commonly called in Theosophical literature the Lords of the Moon) had, as is usual, seven choices before them as to the way in which they would serve.

Only one of those choices brought them, or rather a few of them, over into this Earth-chain to act as guides and teachers to the earlier races.

A considerable proportion--a vast proportion, indeed--of the Moon-men had not attained that level, and consequently had to reappear in this Earth-chain as humanity.