What is, in its essence, the process of evolution from the lower to the higher forms of mental life? It is a process of expanding consciousness; the developing of ability to apprehend a wider and wider circle of existence, to share it, to struggle for it as we do for the life we call our "own." The test of the higher mental forms is therefore a test of universality, of sympathetic inclusiveness; or, to use commoner words, it is a test of enlightened unselfishness. Every human individual has the will to life, the instinct of self-preservation, which persuades him that he is of importance; but the test of his development is his ability to realize that, important though he may be, he is but a small part of the universe, and his highest interests are not in himself alone, his highest duties are not owed to himself alone. And as the life becomes more of the intellect, this fact becomes more and more obvious, more and more dominating. Men who monopolize the material things of the world and their control are necessarily self-seeking; but in the realm of the higher faculties this element, in the very nature of the case, is forced into the background. It is evident that truth is not truth for the Standard Oil Company, nor for J. P. Morgan and Company, nor yet for the government of the United States; it is truth for the whole of mankind, and one who sincerely labors for the truth does so for the universal benefit. There may be, of course, an element of selfishness in the activities of poets and inventors. They may be seeking for fame; they may be hoping to make money out of their discoveries; but the greatest men we know have been dominated by an overwhelming impulse of creation, and when we read their lives, and discover in them signs of petty vanity or jealousy or greed, we are pained and shocked. What touches us most deeply is some mark of self-consecration and humility; as, for example, when Newton tells us that after all his life's labors he felt himself as a little child gathering sea-shells on the shore of the great ocean of truth; or when Alfred Russel Wallace, discovering that Darwin had been working longer than himself over the theory of the origin of species, generously withdrew and permitted the theory to go to the world in Darwin's name.