Mr. Spencer opens his book with some criticisms of Utilitarianism or the "Expediency Philosophy." Every rule, in order to be of value, must have a definite meaning. The rule of "the greatest happiness to the greatest number" supposes mankind to be unanimous in the definition of the greatest happiness; the standard of happiness is, however, infinitely variable, in nations and in individuals. For happiness signifies a gratified state of all the faculties; and no two individuals are alike in faculties. In endeavoring to fix a standard, we are met by such insolvable problems as: What is the ratio between mental and bodily enjoyments constituting the greatest happiness? Which is most truly an element in the desired felicity, content or aspiration? The conclusion we inevitably reach is that a true conception of what human life should be is possible only to the ideal man,--in whom the component feelings exist in their normal proportions. The world as yet contains no such men, and we are left with an insolvable riddle on our hands. There is the same uncertainty as to the mode of obtaining the greatest happiness. The Expediency Philosophy believes that man's intellect is competent to observe accurately and to grasp at once the multiplied phenomena of life and derive therefrom the knowledge which shall enable him to say whether such or such measures will conduce to the greatest happiness of the greatest number. If without knowledge of terrestrial phenomena and their laws, Newton had attempted a theory of planetary and stellar equilibrium, he might have cogitated to all eternity without result. Such an attempt, however, would have been far less absurd than the attempt to find out the principles of public polity by a direct examination of that wonderfully intricate combination, Society. In order to understand Society it is necessary to comprehend Man. Another mistake of the Expediency Philosophy is that it assumes the eternity of government, which marks a certain stage of civilization, but which will by no means necessarily last forever. Time was when the history of a people was the history of its government. Feudalism, serfdom, slavery,--all were forms of government. Progress means less government; constitutional forms, political freedom, democracy, all mean this. Government is a sign of imperfection, an evil necessary against knavery; it must exist only so long as this exists. The Expediency Philosophy is, however, founded on government; takes it into partnership: but a system of moral philosophy professes to be a code of correct rules for the best, as well as the worst, members of society, and applicable to humanity in its highest conceivable perfection. Of the Expediency Philosophy it must, therefore, be said that it can claim no scientific character, since: Its fundamental proposition is not an axiom but a problem to be solved; It is expressed in terms possessing no fixed acceptation; It would require omniscience to carry it into practice;