In either case the creature thinks itself safe, but is sure to be found out sooner or later; nor is it easy to explain this mockery save by reflecting that everything must have its meat in due season, and that meat can only be found for such a multitude of mouths by giving everything as meat in due season to something else. This is like the Kilkenny cats, or robbing Peter to pay Paul; but it is the way of the world, and as every animal must contribute in kind to the picnic of the universe, one does not see what better arrangement could be made than the providing each race with a hereditary fallacy, which shall in the end get it into a scrape, but which shall generally stand the wear and tear of life for some time. "_Do ut des_" is the writing on all flesh to him that eats it; and no creature is dearer to itself than it is to some other that would devour it. Nor is there any statement or proposition more invulnerable than living forms are. Propositions prey upon and are grounded upon one another just like living forms. They support one another as plants and animals do; they are based ultimately on credit, or faith, rather than the cash of irrefragable conviction. The whole universe is carried on on the credit system, and if the mutual confidence on which it is based were to collapse, it must itself collapse immediately. Just or unjust, it lives by faith; it is based on vague and impalpable opinion that by some inscrutable process passes into will and action, and is made manifest in matter and in flesh: it is meteoric--suspended in midair; it is the baseless fabric of a vision so vast, so vivid, and so gorgeous that no base can seem more broad than such stupendous baselessness, and yet any man can bring it about his ears by being over-curious; when faith fails a system based on faith fails also. Whether the universe is really a paying concern, or whether it is an inflated bubble that must burst sooner or later, this is another matter. If people were to demand cash payment in irrefragable certainty for everything that they have taken hitherto as paper money on the credit of the bank of public opinion, is there money enough behind it all to stand so great a drain even on so great a reserve? Probably there is not, but happily there can be no such panic, for even though the cultured classes may do so, the uncultured are too dull to have brains enough to commit such stupendous folly. It takes a long course of academic training to educate a man up to the standard which he must reach before he can entertain such questions seriously, and by a merciful dispensation of Providence, university training is almost as costly as it is unprofitable. The majority will thus be always unable to afford it, and will base their opinions on mother wit and current opinion rather than on demonstration.