It wasn't that I mistrusted the Seth personality, but I felt it was a personification of something else — and that "something else" wasn't a person in our terms. It was, I felt, a consciousness different from mine, but to call Seth a spirit guide, meaning a nonphysical person in usual terms, just didn't fit to me.

p. 132 - Adventures In Consciousness: An Introduction to Aspect Psychology, (1975)