Complex sentence: As put forth in his book, "Conversations on Mind, Matter and Mathematics", Changeux strongly supports the hypothesis that the nervous system is active rather than reactive; that interaction with the environment selects preexisting internal representations rather than imprinting our brain.
Split into simpler sentences: As put forth in one of his books, "Conversations on Mind, Matter and Mathematics", Changeux strongly sides with the statement'The Nervous System is active rather than reactive'. In other words, the interaction with the environment selects preexisting internal representations rather than imprinting our brain.