11 Of the things, then, that are essential to the sustenance of human life, some are inanimate (gold and silver, for example, the fruits of the earth, and so forth), and some are animate and have their own peculiar instincts and appetites. Of these again some are rational, others irrational. Horses, oxen, and the other cattle, [bees,] whose labour contributes more or less to the service and subsistence of man, are not endowed with reason; of rational beings two divisions are made—gods and men. Worship and purity of character will win the favour of the gods; and next to the gods, and a close second to them, men can be most helpful to men.
12 The same classification may likewise be made of the things that are injurious and hurtful. But as people think that the gods bring us no harm, they decide (leaving the gods out of the question) that men are most hurtful to men.
Necessity of man's helpfulness to man.
As for mutual helpfulness, those very things which we have called inanimate are for the most part themselves produced by man's labours; we should not have them without the application of manual labour and skill nor could we enjoy them without the intervention of man. And so with many other things: for without man's industry there could have been no provisions for health, no navigation, no agriculture, no ingathering or storing of the fruits of the field or other kinds of produce. 13 Then, too, there would surely be no exportation of our superfluous commodities or importation of those we lack, did not men perform these services. By the same process of reasoning, without the labour of man's hands, the stone needful for our use would not be quarried from the earth, nor would "iron, copper, gold, and silver, hidden far within," be mined.
IV. Tecta vero, quibus et frigorum vis pelleretur et calorum molestiae sedarentur, unde aut initio generi humano dari potuissent aut postea subveniri,[173] si aut vi tempestatis aut terrae motu aut vetustate cecidissent, nisi communis vita ab hominibus harum rerum auxilia petere didicisset? 14 Adde ductus aquarum, derivationes fluminum, agrorum irrigationes, moles oppositas fluctibus, portus manu factos, quae unde sine hominum opere habere possemus? Ex quibus multisque aliis perspicuum est, qui fructus quaeque utilitates ex rebus iis, quae sint inanimae, percipiantur, eas nos nullo modo sine hominum manu atque opera capere potuisse.
Qui denique ex bestiis fructus aut quae commoditas, nisi homines adiuvarent, percipi posset? Nam et qui principes inveniendi fuerunt, quem ex quaque belua usum habere possemus, homines certe fuerunt, nec hoc tempore sine hominum opera aut pascere eas aut domare aut tueri aut tempestivos fructus ex iis capere possemus; ab eisdemque et, quae nocent,[174] interficiuntur et, quae usui possunt esse, capiuntur.
15 Quid enumerem artium multitudinem, sine quibus vita omnino nulla esse potuisset? Qui enim aegris subveniretur,[175] quae esset oblectatio valentium, qui victus aut cultus, nisi tam multae nobis artes ministrarent? quibus rebus exculta hominum vita tantum distat[176] a victu et cultu bestiarum. Urbes vero sine hominum coetu non potuissent nec aedificari nec frequentari; ex quo leges moresque constituti, tum iuris aequa discriptio[177] certaque vivendi disciplina; quas res et mansuetudo animorum consecuta et verecundia est effectumque, ut esset vita munitior, atque ut dando et accipiendo mutuandisque facultatibus et commodandis[178] nulla re egeremus.
Mutual helpfulness the key to civilization.
IV. And how could houses ever have been provided in the first place for the human race, to keep out the rigours of the cold and alleviate the discomforts of the heat; or how could the ravages of furious tempest or of earthquake or of time upon them afterward have been repaired, had not the bonds of social life taught men in such events to look to their fellow-men for help? 14 Think of the aqueducts, canals, irrigation works, breakwaters, artificial harbours; how should we have these without the work of man? From these and many other illustrations it is obvious that we could not in any way, without the work of man's hands, have received the profits and the benefits accruing from inanimate things.
Finally, of what profit or service could animals be, without the co-operation of man? For it was men who were the foremost in discovering what use could be made of each beast; and to-day, if it were not for man's labour, we could neither feed them nor break them in nor take care of them nor yet secure the profits from them in due season. By man, too, noxious beasts are destroyed, and those that can be of use are captured.