Dick summarizes what he stated in his letters. The ecosphere is Christ, which makes it holy and something we must protect. Christ suffers every time any creature in the ecosphere dies, and Christ will withdraw from the world if we don’t stop harming the planet. Dick’s vision of the savior is the only thing keeping him from going crazy when he hears about atrocities like Agent Orange and Soviet micro-toxins. He calls his belief his own private religion based on aspects of Judaism, Christianity, Buddhism, Hinduism, Gnosticism and modern science. 3-74 and his 9-81 vision are helping him accept his own eventual death and the context of his small part in the overall picture.
He implies that Tagore, like Horselover Fat, may be another of his identities. He senses, like Tagore, that he is dying, somewhat eerily I would say, since he will die less than six months later. He finally has succeeded in his career, and instead of enjoying the money and recognition he is consumed with spreading the message of his vision. Collectively we are all responsible for protecting the ecosphere, and Dick sees it as a choice between spiritual life and physical death.
He has a dream where he watches, on television, a white bird hunted for sport. He interprets the dream to mean all life needs to be sanctified and protected as part of the ecosphere. It is an interconnected system. If one part dies the rest cannot survive.
Dick says he had a hypnagogic vision where he mailed out Xeroxed copies of his Ed Meskys letter to 85 other people, and he imagines that could inspire a revolution.
Trying to envision Tagore as someone or something else (Logos, Krishna, Buddha) misses the point. Tagore is Tagore.