Inde Hominum pecudumque genus, vitæque volantum,
Et quæ marmoreo fert Monstra sub æquore pontus.
Virg.
Though there is a great deal of Pleasure in contemplating the material World, by which I mean that System of Bodies into which Nature has so curiously wrought the Mass of dead Matter, with the several Relations which those Bodies bear to one another; there is still, methinks, something more wonderful and surprizing in Contemplations on the World of Life, by which I mean all those Animals with which every Part of the Universe is furnished. The Material World is only the Shell of the Universe: The World of Life are its Inhabitants.
If we consider those parts of the Material World which lie the nearest to us, and are therefore subject to our Observations and Enquiries, it is amazing to consider the Infinity of Animals with which it is stocked. Every part of Matter is peopled: Every green Leaf swarms with Inhabitants. There is scarce a single Humour in the Body of a Man, or of any other Animal, in which our Glasses do not discover Myriads of living Creatures. The Surface of Animals is also covered with other Animals, which are in the same manner the Basis of other Animals, that live upon it; nay, we find in the most solid Bodies, as in Marble it self, innumerable Cells and Cavities that are crouded with such imperceptible Inhabitants, as are too little for the naked Eye to discover. On the other hand, if we look into the more bulky parts of Nature, we see the Seas, Lakes and Rivers teeming with numberless kinds of living Creatures: We find every Mountain and Marsh, Wilderness and Wood, plentifully stocked with Birds and Beasts, and every part of Matter affording proper Necessaries and Conveniencies for the Livelihood of Multitudes which inhabit it.
Author of the
Plurality of Worlds
draws a very good Argument from this Consideration, for the
peopling
of every Planet; as indeed it seems very probable from the Analogy of Reason, that if no Part of Matter, which we are acquainted with, lies waste and useless, those great Bodies which are at such a Distance from us should not be desart and unpeopled, but rather that they should be furnished with Beings adapted to their respective Situations.