The Secret Doctrine 1.7.6

From the First‐born the Thread between the Silent Watcher and his Shadow becomes more strong and radiant with every Change. The morning Sunlight has changed into noon‐day glory....

This sentence, “the Thread between the Silent Watcher and his Shadow [Man] becomes more strong with every Change,” is another psychological mystery, that will find its explanation in Volume II. For the present, it will suffice to say that the “Watcher” and his “Shadows”—the latter numbering as many as there are reïncarnations for the Monad—are one. The Watcher, or the Divine Prototype, is at the upper rung of the Ladder of Being; the Shadow, at the lower. Withal, the Monad of every living being, unless his moral turpitude breaks the connection, and he runs loose and astray into the “Lunar Path”—to use the Occult expression—is an individual Dhyân Chohan, distinct from others, with a kind of spiritual Individuality of its own, during one special Manvantara. Its Primary, the Spirit (Âtman), is one, of course, with the One Universal Spirit (Paramâtmâ), but the Vehicle (Vâhan) it is enshrined in, the Buddhi, is part and parcel of that Dhyân‐Chohanic Essence; and it is in this that lies the mystery of that ubiquity, which was discussed a few pages back. “My Father, that is in Heaven, and I—are one,” says the Christian Scripture; and in this, at any rate, it is the faithful echo of the Esoteric tenet.