“Thinking in art and morals and even mathematics is neither the reflection in consciousness of a mechanical order in the brain nor the tracing with the mind’s eye of some empirical order in its object, but an endeavour to realize in thought an ideal order which would satisfy an inner demand. The nearer thought comes to its goal, the more it finds itself under constraint by that goal, and dominated in its creative effort by aesthetic or moral or logical relevance. These relations of relevance are not physical or psychological relations. They are normative relations that can enter into the mental current because that current is . . . teleological. Their operation marks the presence of a different type of law, which supervenes upon physical and psychological laws when purpose takes control.”