(1) “If Government is founded upon this, as a law of human nature, that a man, if able, will take from others anything which they have and he desires, it is sufficiently evident that when a man is called a king, he does not change his nature: so that, when he has power to take what he pleases, he will take what he pleases. To suppose that he will not, is to affirm that government is unnecessary, and that human beings will abstain from injuring one another of their own accord.”--Mill. _on Government._ {77} of the science of government, will be posterior to it. And it would be correct to say, that by means of the science of government, and of other kindred sciences--the science of education, for example, which falls under exactly the same principle--we arrive at the science of human nature. If, on the other hand, we are to deduce the theory of government from principles of human nature, in arriving at which principles we have not taken into the account the manner in which men act when invested with the powers of government, then those principles must be defective. They have not been formed by a sufficiently copious induction. We are reasoning, from what a man does in one situation, to what he will do in another. Sometimes we may be quite justified in reasoning thus. When we have no means of acquiring information about the particular case before us, we are compelled to resort to cases which bear some resemblance to it. But the most satisfactory course is to obtain information about the particular case; and, whenever this can be obtained, it ought to be obtained. When first the yellow fever broke out, a physician might be justified in treating it as he had been accustomed to treat those complaints which, on the whole, had the most symptoms in common with it. But what should we think of a physician who should now tell us that he deduced his treatment of yellow fever from the general theory of pathology? Surely we should ask him, Whether, in constructing his theory of pathology, he had or had not taken into the account the facts which had been ascertained respecting the yellow fever? If he had, then it would be more correct to say that he had arrived at the principles of pathology partly by his experience of cases of yellow fever than {78}that he had deduced his treatment of yellow fever from the principles of pathology. If he had not, he should not prescribe for us. If we had the yellow fever, we should prefer a man who had never treated any cases but cases of yellow fever to a man who had walked the hospitals of London and Paris for years, but who knew nothing of our particular disease.