Public opinion is a powerful thing, as the young people in China have already learned. It has made and destroyed laws and customs, schools and armies, commercial intercourse and even government itself. But public opinion does not always take a wise and beneficial course. It is often blind and foolish. It often destroys what is good and true and sets up in a high place what is false and useless or harmful. It is like fire, water, or wind: it may either serve you or destroy you. It must be tamed and trained. It must be made intelligent.