ENDS AND MEANS the universe at large? It is with such questions that I shall deal in the last three chapters. To the 'practical man' they may seem irrelevant. But in fact they are not. It is -in the light of our beliefs about the ultimate nature of reality that we formulate our conceptions of right and wrong; and it is in the light of our conceptions of right and wrong that we frame our conduct, not only in the relations of private life, but also in the sphere of politics and economics. So far from being irrelevant, our meta- physical beliefs are the finally dete'rmining factor in all our actions. That is why it has seemed to me necessary to round off my cookery book of practical recipes with a discussion of first principles. The last three chapters are the most significant and, even from the purely practical point of view, the most important in the book. 10