"I propose in this inquiry to take nothing for granted, but to bring even accepted theories to the test of first principles, and should they not stand the test, freshly to interrogate facts in the endeavor to discover their law. I propose to beg no question, to shrink from no conclusion, but to follow truth wherever it may lead. Upon us is the responsibility of seeking the law, for in the very heart of our civilization to-day women faint and little children moan. But what that law may prove to be is not our affair. If the conclusions that we reach run counter to our prejudices, let us not flinch; if they challenge institutions that have long been deemed wise and natural, let us not turn back."