When an individual passes from one period of life to another a time comes when he cannot go on in senseless activity and excitement as before, but has to understand that although he has out-grown what before used to direct him, this does not mean that he must live without any reasonable guidance, but rather that he must formulate for himself an understanding of life corresponding to his age, and having elucidated it must be guided by it. And in the same way a similar time must come in the growth and development of humanity.