"Man always deceives himself when he abandons experience to follow imaginary systems. He is the work of nature. He exists in nature. He is submitted to her laws. He cannot deliver himself from them. He cannot step beyond them even in thought. It is in vain his mind would spring forward beyond the visible world: an imperious necessity ever compels his return--for a being formed by Nature, who is circumscribed by her laws, there exists nothing beyond the great whole of which he forms a part, of which be experiences the influence. The beings his imagination pictures as above Nature, or distinguished from her, are always chimeras formed after that which he has, already seen, but of which it is utterly impossible he should ever form any correct idea, either as to the place they occupy, or their manner of acting--for him there is not, there can be nothing out of that nature which includes all beings. Instead, therefore, of seeking out of the world he inhabits for beings who can procure him a happiness denied by Nature, let him study this nature, learn her laws, contemplate her energies, observe the immutable rules by which she acts." Speaking of the theological delusions under which many men labor, and of the mode in which man has been surrounded by those delusions, he says:-- "His ignorance made him credulous: his curiosity made him swallow large draughts of the marvellous: time confirmed him in his opinions, and he passed his conjectures from race to race, for realities; a tyrannical power maintained him in his notions, because by those alone could society be enslaved. It was in vain, that some faint glimmerings of Nature occasionally attempted, the recall of his reason; that slight corruscations of experience sometimes threw his darkness into light; the interest of the few was bottomed on his enthusiasm; their pre-eminence depended on his love of the wonderful; their very existence rested on the solidity of his ignorance they consequently suffered no opportunity to escape, of smothering even the lambent flame. The many were thus first deceived into credulity, then coerced into submission. At length, the whole science of man became a confused mass of darkness, falsehood, and contradictions, with here and there a feeble ray of truth, furnished by that Nature of which he can never entirely divest himself, because, without his knowledge, his necessities are continually bringing him back to her resources." Having stated that by "nature" he means the "great whole," our author complains of those who assert that matter is senseless, inanimate, unintelligent, etc., and says, "Experience proves to us that the matter which we regard as inert or dead, assumes action, intelligence, and life, when it is combined in a certain way:"--