Any model or description that leaves out conscious forces... is bound to be sadly incomplete and unsatisfactory... This scheme is one that puts mind back over matter, in a sense, not under or outside or beside it. It is a scheme that idealizes ideas and ideals over physical and chemical interactions, nerve impulse traffic, and DNA. It is a brain model in which conscious mental psychic forces are recognized to be the crowning achievement of some five hundred million years or more of evolution.

Mind, Brain, and Humanist Values (1965)