The Instructor

Tempus autem opportunum conjunctionis solis iis relinquitur considerandum, qui juncti sunt matrimonio; qui autem matrimonio juncti sunt, iis scopus est et institutum, liberorum susceptio: finis autem, ut boni sint liberi: quemadmodum agricolæ seminis quidem dejectionis causa est, quod nutrimenti habendi curam gerat; agriculturæ autem finis est, fructuum perceptio. Multo autem melior est agricola, qui terram colit animatam: ille enim ed tempus alimentum expetens, hic vero ut universum permanent, curam gerens, agricolæofficio fungitur: et ille quidem propter se, hic vero propter Deum plantat ac seminat. Dixit enim: “Multiplicemini;” ubi hoc subaudiendum est: “Et ea ratione fit homo Dei imago, quatenus homo co-operatur ad generationem hominis.” Non est quælibet terra apta ad suscipienda semina: quod si etiam sit quælibet, non tamen eidem agricolæ. Neque vero seminandum est supra petram, neque semen est contumlia afficiendum, quod quidem dux est et princeps generationis, estque substantia, quæ simul habet insitas naturæ rationes. Quæ sunt autem secundum naturam rationes, absque ratione præternaturalibus mandando meatibus, ignominia afficere, valde est impium. Videte itaque quomodo sapientissimus Moyses infrugiferam aliquando sationem symbolice repulerit: “Non comedes, inquiens, leporem, nec hyænam.” Non vult homines esse qualitatis eorum participes, neque eis æqualem gustare libidinem: hæc enim animalia ad explendum coitum venereum feruntur insano quodam furore. Ac leporem quidem dicunt quotannis multiplicare anum, pro numero annorum, quos vixit, habentem foramina: et ea ratione dum leporis esum prohibet, significat se dehortari puerorum amorem. Hyænam autem vicissim singulis annis masculinum sexum mutare in femininum: significare autem non esse illi ad adulteria prorumpendum, qui ab hyæna abstinet.

Well, I also agree that the consummately wise Moses confessedly indicates by the prohibition before us, that we must not resemble these animals; but I do not assent to the explanation of what has been symbolically spoken. For nature never can be forced to change. What once has been impressed on it, may not be transformed into the opposite by passion. For passion is not nature, and passion is wont to deface the form, not to cast it into a new shape. Though many birds are said to change with the seasons, both in colour and voice, as the blackbird (κόσσυφος), which becomes yellow from black, and a chatterer from a singing-bird. Similarly also the nightingale changes by turns both its colour and note. But they do not alter their nature itself, so as in the transformation to become female from male. But the new crop of feathers, like new clothes, produces a kind of colouring of the feathers, and a little after it evaporates in the rigour of winter, as a flower when its colour fades. And in like manner the voice itself, injured by the cold, is enfeebled. For, in consequence of the outer skin being thickened by the surrounding air, the arteries about the neck being compressed and filled, press hard on the breath; which being very much confined, emits a stifled sound. When, again, the breath is assimilated to the surrounding air and relaxed in spring, it is freed from its confined condition, and is carried through the dilated, though till then obstructed arteries, it warbles no longer a dying melody, but now gives forth a shrill note; and the yoice flows wide, and spring now becomes the song of the voice of birds.