To take one prominent instance of this influence, it is remarkable how, in his explanation of our mundane system, he is both consciously and unconsciously guided by the analogy of the human body. Even Lucretius, living in the very meridian of ancient science, cannot in imagination absolutely emancipate himself from the associations of mythology. He is indeed conscious of the inconsistency of attributing life and sense to the earth: yet not only does he speak poetically of Earth being the creative mother, Aether the fructifying father of all things, but his whole conception of the creation of the world is derived from a supposed likeness between the properties of our terrestrial and celestial systems, and those of living beings. Thus we read—
Undique quandoquidem per caulas aetheris omnis
Et quasi per magni circum spiracula mundi
Exitus introitusque elementis redditus extat.[397]
Of the growth of plants and herbage it is said—
Ut pluma atque pili primum saetaeque creantur
Quadripedum membris et corpore pennipotentum,
Sic nova tum tellus herbas virgultaque primum
Sustulit, inde loci mortalia saecla creavit.[398]