Mere purposive rationality unaided by such phenomena as art, religion, dream and the like, is necessarily pathogenic and destructive of life; and  . . . its virulence springs specifically from the circumstance that life depends upon interlocking circuits of contingency, while consciousness can see only such short arcs of such circuits as human purpose may direct.”

Gregory Bateson [1972]: “Style, Grace and Information in Primitive Art.”  Page 146 in: Steps to an Ecology of Mind. New York, NY: Ballentine Books.
George Santayana said something similar in his Sonnet III:

It is not wisdom to be only wise,
And on the inward vision close the eyes,
But it is wisdom to believe the heart.