Now the truth is, that there is scarcely any activity in life in which the law does not play an important part. This is true from childhood to old age, in every calling and every occupation in life.(20) The law is not intended for any one class of people, but it applies to all classes of people, the rich and the poor, the wise and the ignorant. It also applies to all ages, to men, women, and children. _What is the law_, or what is a law?(21) There is nothing difficult about it. A law is merely a rule of human conduct, a rule of conduct for human beings which is enforced by the Nation, the State, or the city. There are other rules of human conduct enforced by the parents, teachers, or employers—those who have authority over others, those whose duty it is to direct the conduct of others. Every boy knows that in his home his parents have certain rules, not written or printed, but stated by his father or mother with relation to his conduct about the home, about his school, or about his play time or vacation, when he must go to bed, when he must arise, and with whom he may associate, that he must not go in swimming unless accompanied by his father, that he shall not go to the movies without the consent of his mother, that he must attend Sunday school regularly, that he must not eat with his knife, that he must be courteous to all persons, especially the aged, that he must not play ball in the street, and a large number of other rules and directions, all intended for the good of the boy. Then in school you find certain rules of conduct made by the Board of Education or other officers, or adopted by the teacher. If a boy works in a store, he finds that his employer has certain rules: the time when the store shall be opened and closed; that the boy shall sweep the floor at certain hours; that he may go to lunch at a certain time; that he shall not permit other boys to pass behind the counters, etc. All of these are illustrations of rules of conduct for children, or those under the control, authority, or direction of some older person. But older persons, the parents, the school officers, the teachers, the storekeepers, and those of all other occupations are likewise subject to rules, are under control and direction of the Nation, the State, and the city, all having power to enforce rules of conduct, called laws, which apply to the old and the young. Without such rules, such laws, it would be impossible to maintain peace and order. Without such rules, called laws, it would be impossible to protect the weak against the strong and the wicked.