CHAP. 1.—INTRODUCTION.
We are now about to enter upon an examination of the greatest of all the operations of Nature—we are about to discourse to man upon his aliments,1291 and to compel him to admit that he is ignorant by what means he exists. And let no one, misled by the apparent triviality of the names which we shall have to employ, regard this subject as one that is frivolous or contemptible: for we shall here have to set forth the state of peace or of war which exists between the various departments of Nature, the hatreds or friendships which are maintained by objects dumb and destitute of sense, and all, too, created—a wonderful subject for our contemplation!—for the sake of man alone. To these states, known to the Greeks by the respective appellations “sympathia” and “antipathia,” we are indebted for the first principles1292 of all things; for hence it is that water has the property of extinguishing fire, that the sun absorbs water, that the moon produces it, and that each of those heavenly bodies is from time to time eclipsed by the other.
Hence it is, too, descending from the contemplation of a loftier sphere, that the loadstone1293 possesses the property of attracting iron, and another stone,1294 again, that of repelling it; and that the diamond, that pride of luxury and opulence, though infrangible by every other object, and presenting a resistance that cannot be overcome, is broken asunder by a he-goat’s blood1295—in addition to numerous other marvels of which we shall have to speak on more appropriate occasions, equal to this or still more wonderful even. My only request is that pardon may be accorded me for beginning with objects of a more humble nature, though still so greatly conducive to our health—I mean the garden plants, of which I shall now proceed to speak.