The state of our civilization does not, therefore, prove the unlimited perfectibility of man. If he have learned many things, he has forgotten others. He has not added another to his senses; his soul is not enriched by one new faculty. I cannot too much insist upon the great though sad truth, that whatever we gain in one direction is counterbalanced by some loss in another; that, limited as is our intellectual domain, we are doomed never to possess its whole extent at once. Were it not for this fatal law, we might imagine that at some period, however distant, man, finding himself in possession of the experience of successive ages, and having acquired all that it is in his power to acquire, would have learned at last to apply his acquisitions to his welfare--to live without battling against his kind, and against misery; to enjoy a state, if not of unalloyed happiness, at least of abundance and peace. But even so limited a felicity is not promised us here below, for in proportion as man learns he unlearns; whatever he acquires, is at the cost of some previous acquisition; whatever he possesses he is always in danger of losing. We flatter ourselves with the belief that our civilization is imperishable, because we possess the art of printing, gunpowder, the steam engine, &c. These are valuable means to accomplish great results, but the accomplishment depends on their use. The art of printing is known to many other nations beside ourselves, and is as extensively used by them as by us.[178] Let us see its fruits. In Tonquin, Anam, Japan, books are plentiful, much cheaper than with us--so cheap that they are within the reach of even the poorest--and even the poorest read them. How is it, then, that these people are so enervated, so degraded, so sunk in sloth and vice[179]--so near that stage in which even civilized man, having frittered away his physical and mental powers, may sink infinitely below the rude barbarian, who, at the first convenient opportunity, becomes his master? Whence this result? Precisely because the art of printing is a means, and not an agent. So long as it is used to diffuse sound, sterling ideas, to afford wholesome and refreshing nutriment to vigorous minds, a civilization never decays. But when it becomes the vile caterer to a depraved taste, when it serves only to multiply the morbid productions of enervated or vitiated minds, the senseless quibbles of a sectarian theology instead of religion, the venomous scurrility of libellists instead of politics, the foul obscenities of licentious rhymers instead of poesy--how and why should the art of printing save a civilization from ruin?