A Philosophical Dictionary, Volume 05. Voltaire
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observed and insisted upon by some that if a statue or a watch were shown to a savage who had never seen them, he would inevitably acknowledge that they were the productions of some intelligent agent, more powerful and ingenious than himself; and hence it will be inferred that we are equally bound to acknowledge that the machine of the universe, that man, that the phenomena of nature, are the productions of an agent, whose intelligence and power are far superior to our own.
"I answer, in the first place, that we cannot possibly doubt either the great power or the great skill of nature; we admire her skill as often as we are surprised by the extended, varied and complicated effects which we find in those of her works that we take the pains to investigate; she is not, however, either more or less skilful in any one of her works than in the rest. We no more comprehend how she could produce a stone or a piece of metal than how she could produce a head organized like that of Newton. We call that man skilful who can perform things which we are unable to perform ourselves. Nature can perform everything; and when anything exists, it is a proof that she was able to make it. Thus, it is only in relation to ourselves that we ever judge nature to be skilful; we compare it in those cases with ourselves; and, as we possess a quality which we call intelligence, by the aid of which we produce works, in which we display our skill, we thence conclude that the works of nature, which must excite our astonishment and admiration, are not in fact hers, but the productions of an artificer, intelligent like ourselves, and whose intelligence we proportion, in our minds, to the degree of astonishment excited in us by his works; that is, in fact, to our own weakness and ignorance."
See the reply to these arguments under the articles on "Atheism" and "God," and in the following section, written long before the "System of Nature."
If a clock is not made in order to tell the time of the day, I will then admit that final causes are nothing but chimeras, and be content to go by the name of a final-cause-finder – in plain language, fool – to the end of my life.
All the parts, however, of that great machine, the world, seem made for one another. Some philosophers affect to deride final causes, which were rejected, they tell us, by Epicurus and Lucretius. But it seems to me that Epicurus and Lucretius rather merit the derision. They tell you that the eye is not made to see; but that, since it was found out that eyes were capable of being used for that purpose, to that purpose they have been applied. According to them, the mouth is not formed to speak and eat, nor the stomach to digest, nor the heart to receive the blood from the veins and impel it through the arteries, nor the feet to walk, nor the ears to hear. Yet, at the same time, these very shrewd and consistent persons admitted that tailors made garments to clothe them, and masons built houses to lodge them; and thus ventured to deny nature – the great existence, the universal intelligence – what they conceded to the most insignificant artificers employed by themselves.
The doctrine of final causes ought certainly to be preserved from being abused. We have already remarked that M. le Prieur, in the "Spectator of Nature," contends in vain that the tides were attached to the ocean to enable ships to enter more easily into their ports, and to preserve the water from corruption; he might just as probably and successfully have urged that legs were made to wear boots, and noses to bear spectacles.
In order to satisfy ourselves of the truth of a final cause, in any particular instance, it is necessary that the effect produced should be uniform and invariably in time and place. Ships have not existed in all times and upon all seas; accordingly, it cannot be said that the ocean was made for ships. It is impossible not to perceive how ridiculous it would be to maintain that nature had toiled on from the very beginning of time to adjust herself to the inventions of our fortuitous and arbitrary arts, all of which are of so late a date in their discovery; but it is perfectly clear that if noses were not made for spectacles, they were made for smelling, and there have been noses ever since there were men. In the same manner, hands, instead of being bestowed for the sake of gloves, are visibly destined for all those uses to which the metacarpus, the phalanges of the fingers, and the movements of the circular muscle of the wrist, render them applicable by us. Cicero, who doubted everything else, had no doubt about final causes.
It appears particularly difficult to suppose that those parts of the human frame by which the perpetuation of the species is conducted should not, in fact, have been intended and destined for that purpose, from their mechanism so truly admirable, and the sensation which nature has connected with it more admirable still. Epicurus would be at least obliged to admit that pleasure is divine, and that that pleasure is a final cause, in consequence of which beings, endowed with sensibility, but who could never have communicated it to themselves, have been incessantly introduced into the world as others have passed away from it.
This philosopher, Epicurus, was a great man for the age in which he lived. He saw that Descartes denied what Gassendi affirmed and what Newton demonstrated – that motion cannot exist without a vacuum. He conceived the necessity of atoms to serve as constituent parts of invariable species. These are philosophical ideas. Nothing, however, was more respectable than the morality of genuine Epicureans; it consisted in sequestration from public affairs, which are incompatible with wisdom, and in friendship, without which life is but a burden. But as to the rest of the philosophy of Epicurus, it appears not to be more admissible than the grooved or tubular matter of Descartes. It is, as it appears to me, wilfully to shut the eyes and the understanding, and to maintain that there is no design in nature; and if there is design, there is an intelligent cause – there exists a God.
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