FOOTNOTE:
[4] "The present powerlessness of science to explain or originate life is a convenient weapon wherewith to fell a pseudo-scientific antagonist who is dogmatising too loudly out of bounds; but it is not perfectly secure as a permanent support.... Life in its ultimate elements and on its material side is such a simple thing, it is but a slight extension of known chemical and physical forces.... I apprehend that there is not a biologist but believes (perhaps quite erroneously) that sooner or later the discovery will be made, and that a cell discharging all the essential functions of life will be constructed out of inorganic material." ("Man and the Universe," Chap. I.).