behind the alterations in conditions. From the sixteenth century onward the history of mankind is a story of political and social institutions becoming more and more plainly misfits, less comfortable and more vexatious, and of the slow reluctant realization of the need for a conscious and deliberate reconstruction of the whole scheme of human societies in the face of needs and possibilities new to all the former experiences of life.
What are these changes in the conditions of human life that have disorganized that balance of empire, priest, peasant and trader, with periodic refreshment by barbaric conquest, that has held human affairs in the Old World in a sort of working rhythm for more than a hundred centuries?
They are manifold and various, for human affairs are multitudinously complex; but the main changes seem all to turn upon one cause, namely the growth and extension of a knowledge of the nature of things, beginning first of all in small groups of intelligent people and spreading at first slowly, and in the last five hundred years very rapidly, to larger and larger proportions of the general population.
But there has also been a great change in human conditions due to a change in the spirit of human life. This change has gone on side by side with the increase and extension of knowledge, and is subtly connected with it. There has been an increasing disposition to treat a life based on the common and more elementary desires and gratifications as unsatisfactory, and to seek relationship with and service and participation in a larger life. This is the common characteristic of all the great religions that have spread throughout the world in the last twenty odd centuries, Buddhism, Christianity and Islam alike. They have had to do with the spirit of man in a way that the older religions did not have to do. They are forces quite different in their nature and effect from the old fetishistic blood-sacrifice religions of priest and temple that they have in