In these accelerated times, our decisive and businesslike ways of thinking are unprepared for ambiguity, paradox, and sleeping on it." We assume that the quick-thinking "hare brain" will beat out the slower Intuition of the "tortoise mind." However, now research in cognitive science is changing this understanding of the human mind. It suggests that patience and confusion--rather than rigor and certainty--are the essential precursors of wisdom.

With a compelling argument that the mind works best when we trust our unconscious, or "undermind," psychologist Guy Claxton makes an appeal...