@Cyracuz,
Because according to him, what he calls "sleeping beings " (
our natural unenlightened state of consciousness) serve as a transducer of coarse to fine energy required in the evolutionary process of higher conscious beings
towards the absolute. In short, the analogy is: humanity is to higher beings as plants are to humanity. However a
limited number of humans have the potential to "awaken" (become enlightened) and evolve to higher levels of consciousness themselves.
Knowledge is like a material commodity in short supply. Its acquisition requires "work" in order to awaken and constant reminders by someone already awake to stop the acolyte falling back to sleep. (The system uses the equivalent of pyramid selling for advancement)
Aren't you glad you asked !
Yet, if you ignore the weird elitist cosmology whose mechanisms involve resonances and vibrations (...ring any bells ?...) and look instead at the psychological observations resulting from his system, Gurdjieff seems to have unique insight into the non-integrated nature of "self", which if we are truthful, is our common experience . It was these insights which attracted many celebrities and intellectuals to Gurdjieff's door.