_Sect._ 15.--_Natura nihil agit frustra_, is the only indisputable axiom in philosophy. There are no grotesques in nature; not any thing framed to fill up empty cantons, and unnecessary spaces. In the most imperfect creatures, and such as were not preserved in the ark, but, having their seeds and principles in the womb of nature, are everywhere, where the power of the sun is,--in these is the wisdom of his hand discovered. Out of this rank Solomon chose the object of his admiration; indeed, what reason may not go to school to the wisdom of bees, ants, and spiders? What wise hand teacheth them to do what reason cannot teach us? Ruder heads stand amazed at those prodigious pieces of nature, whales, elephants, dromedaries, and camels; these, I confess, are the colossus and majestick pieces of her hand; but in these narrow engines there is more curious mathematicks; and the civility of these little citizens more neatly sets forth the wisdom of their Maker. Who admires not Regio Montanus his fly beyond his eagle;[17] or wonders not more at the operation of two souls in those little bodies than but one in the trunk of a cedar? I could never content my contemplation with those general pieces of wonder, the flux and reflux of the sea, the increase of Nile, the conversion of the needle to the north; and have studied to match and parallel those in the more obvious and neglected pieces of nature which, without farther travel, I can do in the cosmography of myself. We carry with us the wonders we seek without us: there is all Africa and her prodigies in us. We are that bold and adventurous piece of nature, which he that studies wisely learns, in a compendium, what others labour at in a divided piece and endless volume.