“I do not know whether you draw a distinction between principles and rules. But I do... Rules are practical; they are habitual ways of doing things according to prescription. But principles are intellectual; they are useful methods of judging things... The principle may be wrong, but the act is conscious and responsible. The rule may be right, but the act is mechanical. A religious act may not be a correct act, but must at least be a responsible act. To permit this responsibility, religion must mainly be a matter of principles only. It cannot be a matter of rules. The moment it degenerates into rules it ceases to be religion, as it kills the responsibility which is the essence of a truly religious act.”