When upon a dream I had forborne eggs a long time, on purpose that in an egg (as in a heart) I might make experiment of a notable vision that often troubled me; some at Sossius Senecio's table suspected that I was tainted with Orpheus's or Pythagoras's opinions, and refused to eat an egg (as some do the heart and brain) imagining it to be the principle of generation. And Alexander the Epicurean ridiculingly repeated,
To feed on beans and parents' heads Is equal sin;
As if the Pythagoreans meant eggs by the word [Greek omitted] (BEANS), deriving it from [Greek omitted](TO CONCEIVE), and thought it as unlawful to feed on eggs as on the animals that lay them. Now to pretend a dream for the cause of my abstaining, to an Epicurean, had been a defence more irrational than the cause itself; and therefore I suffered jocose Alexander to enjoy his opinion, for he was a pleasant man and an excellent scholar.
Soon after he proposed that perplexed question, that plague of the inquisitive, Which was first, the bird or the egg? And my friend Sylla, saying that with this little question, as with an engine, we shook the great and weighty problem (whether the world had a beginning), declared his dislike of such questions. But Alexander deriding the question as slight and impertinent, my relation Firmus said:. Well, sir, at present your atoms will do me some service; for if we suppose that small things must be the principles of greater, it is likely that the egg was before the bird; for an egg amongst sensible things is very simple, and the bird is more mixed, and contains a greater variety of parts. It is universally true that a principle is before that whose principle it is; now the seed is a principle, and the egg is somewhat more than the seed and less than the bird for as a disposition or a progress in goodness is something between a tractable mind and a habit of virtue, so an egg is as it were a progress of Nature tending from the seed to a perfect animal. And as in an animal they say the veins and arteries are formed first, upon the same account the egg should be before the bird, as the thing containing before the thing contained. Thus art first makes rude and ill-shapen figures and afterwards perfects everything with its proper form; and it was for this that the statuary Polycletus said, Then our work is most difficult, when the clay comes to be fashioned by the fingers. So it is probable that matter, not readily obeying the slow motions of contriving Nature, at first frames rude and indefinite masses, as the egg, and of these moulded anew, and joined in better order, the animal afterward is formed. As the canker is first, and then growing dry and cleaving lets forth a winged animal, called psyche; so the egg is first as it were the subject-matter of the generation. For it is certain that, in every change, that out of which the thing changes must be before the thing changing. Observe how worms and caterpillars are bred in trees from the moisture corrupted or concocted; now none can say but that the engendering moisture is naturally before all these. For (as Plato says) matter is as a mother or nurse in respect of the bodies that are formed, and we call that matter out of which anything that is made. And with a smile continued he, I speak to those that are acquainted with the mystical and sacred discourse of Orpheus, who not only affirms the egg to be before the bird, but makes it the first being in the whole world. The other parts, because deep mysteries, we shall now pass by; but let us look upon the various kinds of animals, and we shall find almost every one beginning from an egg - fowls and fishes; land animals, as lizards; amphibious, as crocodiles; some with two legs, as a cock; some without any, as a snake; and some with many, as a locust. And therefore in the solemn feast of Bacchus it is very well done to dedicate an egg, as the emblem of that which begets and contains everything in itself.
To this discourse of Firmus, Senecio replied: Sir, your last similitude contradicts your first, and you have unwittingly opened the world (instead of the door, as the proverb goes) against yourself. For the world was before all, being the most perfect; and it is rational that the perfect in Nature should be before the imperfect, as the sound before the maimed, and the whole before the part. For it is absurd that there should be a part when there is nothing whose part it is; and therefore nobody says the seed's man or egg's hen, but the man's seed and hen's egg; because those being after these and formed in them, pay as it were a debt to Nature, by bringing forth another. For they are not in themselves perfect, and therefore have a natural appetite to produce such a thing as that out of which they were first formed; and therefore seed is defined as a thing produced that is to be perfected by another production. Now nothing can be perfected by or want that which as yet is not. Everybody sees that eggs have the nature of a concretion or consistence in some animal or other, but want those organs, veins, and muscles which animals enjoy. And therefore no story delivers that ever any egg was formed immediately from earth; and the poets themselves tell us, that the egg out of which came the Tyndaridae fell down from heaven. But even till this time the earth produceth some perfect and organized animals, as mice in Egypt, and snakes, frogs, and grasshoppers almost everywhere, some external and invigorating principle assisting in the production. And in Sicily, where in the servile war much blood was shed, and many carcasses rotted on the ground, whole swarms of locusts were produced, and spoiled the corn over the whole isle. Such spring from and are nourished by the earth; and seed being formed in them, pleasure and titillation provoke them to mix, upon which some lay eggs, and some bring forth their young alive; and this evidently proves that animals first sprang from earth, and afterwards by copulation, after different ways, propagated their several kinds. In short, it is the same thing as if you said the womb was before the woman; for as the womb is to the egg, the egg is to the chick that is formed in it; so that he that inquires how birds should be when there were no eggs, might ask as well how men and women could be before any organs of generation were formed. Parts generally have their subsistence together with the whole; particular powers follow particular members, and operations those Powers, and effects those operations. Now the effect of the generative power is the seed and egg; so that these must be after the formation of the whole. Therefore consider, as there can be no digestion of food before the animal is formed, so there can be no seed nor egg; for those, it is likely, are made by some digestion and alterations; nor can it be that, before the animal is, the superfluous parts of the food of the animal should have a being. Besides, though seed may perhaps pretend to be a principle, the egg cannot; for it doth not subsist first, nor hath it the nature of a whole, for it is imperfect. Therefore we do not affirm that the animal is produced without a principle of its being; but we call the principle that power which changes, mixes, and tempers the matter, so that a living creature is regularly produced; but the egg is an after-production, as the blood or milk of an animal after the taking in and digestion of the food. For we never see an egg formed immediately of mud, for it is produced in the bodies of animals alone; but a thousand living creatures rise from the mud. What need of many instances? None ever found the spawn or egg of an eel; yet if you empty a pit and take out all the mud, as soon as other water settles in it, eels likewise are presently produced. Now that must exist first which hath no need of any other thing that it may exist, and that after, which cannot be without the concurrence of another thing. And of this priority is our present discourse. Besides, birds build nests before they lay their eggs; and women provide cradles, swaddling cloths and the like; yet who says that the nest is before the egg, or the swaddling cloths before the infant. For the earth (as Plato says doth not imitate a woman, but a woman, and so likewise all other females, the earth. Moreover, it is probable that the first production out of the earth, which was then vigorous and perfect, was self-sufficient and entire, nor stood in need of those secundines, membranes, and vessels, which now Nature forms to help the weakness and supply the defects of breeders.