Another quote from Gregory Bateson, which, put into the context of design, captures the curious process, by which the best design practice proceeds:
“…we shall know a little more by dint of rigour and imagination, the two great contraries of mental process, either of which by itself is lethal. Rigour alone is paralytic death, but imagination alone is insanity.”
Gregory Bateson, Mind and Nature (Appendix: Time Is Out of Joint)