"By liberty I mean the assurance that every man shall be protected in doing what he believes his duty against the influence of authority and majorities, custom and opinion. The State is competent to assign duties and draw the line between good and evil only in its immediate sphere. Beyond the limits of things necessary for its well-being, it can only give indirect help to fight the battle of life by promoting the influences which prevail against temptation, — religion, education, and the distribution of wealth."