The greatest thing ever known—what is it? Surely the answer must be one that is absolutely universal, both in its nature and in the possibilities of its application. It must be one that can be accepted wholly and unreservedly, not only by a single individual, but by bodies of individuals, be they the originators of any particular school of ethics, the followers of any particular system of philosophy, or even the adherents of any great system of religion. It must be one so true in itself that it can be accepted by all men alike the world over. And again, it must be an answer that is true for no particular period of time, but equally true for all time—an answer that was true not only for yesterday, that is true for today, that may be true for tomorrow, but one equally true for yesterday, today, and forever.