Robert Monroe wrote about karma, the "Second Body," and the ethics of perception. Ironically, downloading a pirated, low-quality PDF violates the very integrity he preached. Monroe's institute reinvests book sales into consciousness research (the Exploration of Human Consciousness project).

In 1958, Robert Monroe, a successful radio executive, began experiencing a series of events that would change his life—and our understanding of consciousness—forever. Unpredictably, he found himself leaving his physical body to explore realms beyond the material world. These experiences were documented in three landmark books that remain the definitive works on astral projection and the "Gateway" into expanded states of being. The Core Trilogy: A Roadmap of Consciousness