We can indeed point to some of its manifestations in ideas and ideals embodied in prose and verse, in music and painting, in Church and College, and, above all, in society itself. But we cannot measure it or tabulate it. Yet it means more to us than any other. From the child's earliest hours its influences have been playing upon him. It is present always, and counts because of its constant pressure. But because its relation to us is so intimate, and because it has so informed the very structure of our minds, we do not usually distinguish its influence upon us from the activities which we suppose we originate ourselves. In fact, we do not think about it at all, and if "environment" happens to be mentioned, our thoughts fly immediately to the physical world.
There is none of our experience which is not permeated by the social environment. From his environment the child derives the language he speaks. All his manners and customs are accepted from it without question and without reflection. His political opinions and religious beliefs have been largely supplied to him by it. His mental and moral life consists largely of opinions which he has accepted on the authority of the society in which he lives. He simply takes for granted the validity of his beliefs and customs. He takes them to be as fixed and certain as the rising and setting of the sun.
But there come times in the life of every individual when the traditions in which he has been brought up appear no longer adequate. The orthodox explanations of science and politics and religion no longer satisfy. Doubt has seized hold of his
