Ms is an essay — not a treatise — ou the most immrtant of all matters of human con oern. Although it has cost its author a great deal more thought and labor than will be apparent, it falls, in his estimation, far below the demands of its implacably urgent them. Each page could readily be expanded into a volume. It suggests but the beginning of the beginning now being made to raise men's thinking onto a plain which may perha enable them to fend off or reduce some of e dangers which lurk on every hand.