(3) In the last place here, we must now look at the Demand for the personal services of Professional laborers. These are persons, who have done something more with reference to their life-work than serve an apprenticeship to a trade, or acquire some mechanical skill in connection with some kind of machinery. An Education rather than an Apprenticeship is implied in Professional laborers. Knowledge of the bodies and of the minds of men; acquaintance with some one section at least of the general laws that pervade the universe; some confidence (the more the better) in God, who created and governs the world; are all requisite to a reasonable success on the part of Professional laborers. The Demand for their services, and of course also the Return made to them for such services, will largely depend on such superior knowledge and confidence acquired by such persons, and involved in their services. Clergymen, physicians, lawyers, statesmen, literators, actors, teachers, and scientific experts, may serve as our chief examples of Professional laborers. (a) "All that a man hath will he give for his life." When men fall sick, or those fall sick who are dear to them, they send for the doctor. Scarcely any trait of human nature is more universal than this. And the trait puts honor on human nature, because it implies a relatively high estimate of the worth of life in the mind of the patient, and also a relatively high confidence in a certain class of one's fellow-men. As Society progresses, and as Christianity deepens the sense of the worth of the individual life, and knits a stronger tie of confidence between man and man, a change is slowly coming over the relations between physicians and their patients; people do not wait to fall sick before they send for the doctor, so much as they formerly did; some individuals and families are establishing connections with a medical adviser, who studies their constitutions and habits of life beforehand, guides them in general sanitation, and thus both he and they are better ready for curatives in times of illness. Gladstone has long had such an attendant, with the best of results as he thinks, and strongly commended such action to John Bright, but too late to save the latter from what was thought to be premature death in consequence of imprudent and ill-advised handling of his health. In a few cases in England and the United States an annual salary is paid a physician for general care of the family's health, whether sickness befall or not, instead of the more usual fees on consultation and attendance. Dr. Munn of New York receives such an annual salary from Mr. Jay Gould. But in whatever way medical services are paid for, the Demand for them is constant and intense. The motive to buy them is immediate and personal, not mediate and remote, as in the case of capitalists and laborers of the second class.