“Humility: It is better to presume ignorance and invite learning than to assume sufficient knowledge and risk the consequent blindness. It is much better to make friends with what you do not know than with what you do know, as there is an infinite supply of the former but a finite stock of the latter. When you are tightly boxed in or cornered—all too often by your own stubborn and fixed adherence to some unconsciously worshipped assumptions—all there is to help you is what you have not yet learned.”