" What sustains us, in belief as in action, is not reason or justification, but something more basic than these--for we go on in the same way even after we are convinced that the reasons have given out. If we tried to rely entirely on reason, and pressed it hard, our lives and beliefs would collapse--a form of madness that may actually occur if the inertial force of taking the world and life for granted is somehow lost. If we lose our grip on that, reason will not give it back to us. "

― Thomas Nagel