If we would reflect upon the mental life of humanity we must consider the individual mind in relation to the world of mankind. In considering the individual mind I have adopted the terms _objective mind_ and _subjective mind_ to denote two aspects of mind. The words "objective" and "subjective" in conjunction with mind are used in a special sense which has to be defined. The world of men has been considered as the psychic environment of the individual mind, and I have introduced a term to denote the power of aggregations of human thoughts and impulses. It has been viewed as an aspect of the universal process underlying the conative disposition and will-to-power of all living beings, and on account of the mode of its operation it has been termed "cosmic suggestion." The term is not intended to imply that the psychic forces of the human mind can be "given off" and have separate existence, like the "odylic fluid" of the early Mesmerists. The power is that of collective minds; suggestion an effect of its activity, not a derived essence. It must be understood that these three terms are provisional, and will be discarded if, in the course of time, better ones suggest themselves. Finally, I would crave the indulgence of my readers to say a few words about the philosophy of egoism. There is a view of egoism--the principle of self-interest--as distinguished from altruism, which is seen in opposition to asceticism and mysticism, a view which prompted Lecky when he wrote: "Taking human nature with all its defects, the influence of an enlightened self-interest first of all upon the actions and afterwards upon the character of mankind, is shown to be sufficient to construct the whole edifice of civilization; and if that principle were withdrawn, all would crumble in the dust.... When, therefore, the ascetic, proclaiming the utter depravity of mankind, seeks to extirpate his most natural passions, to crush the expansion of his faculties, to destroy the versatility of his tastes, and to arrest the flow and impulse of his nature, he is striking at the very force and energy of civilization." How infinitely preferable is the spirit of enlightened egoism to the blind altruism of the fanatic! The egoism that enhances rather than dims the love of others. It is only through the realization of community of interests and aims that like thought will result in like conduct. It is a recognition of this principle of systematic integration of interests and their concomitant obligations, starting from egoism, in the sense of a realization of the relation of self to environment, and then through successive stages of widening appreciation of the full contents of environment to the identification of the self with the community, which alone leads to State or National morality, and will lead, ultimately it may be hoped, to the morality of a community of all nations--that is, a world morality. It is for this reason that we say that the end and aim