The desire for work, we must, first of all, admit, cannot be attained by instruction; or even--as our daily experience sadly testifies--by mere example. It must be reached by reflection and experience; and experience thus reflected on will reveal to any serious inquirer the following facts. Rest, such as is desired, is not to be found in complete inactivity of mind or body, or in as little activity as possible. On the contrary, it is to be found only in well-adapted and well-ordered activity of both body and mind. The whole nature of man is created for activity, and Nature revenges herself bitterly on him who would rashly defy this law. Man is indeed driven out of the paradise of absolute rest, and God gives him the command to work, but with the work comes the consolation that work is essential to happiness. True rest, therefore, issues from work. Intellectual rest occurs through the perception of fruitful progress in one’s work, and through the solving of one’s problems. Physical rest is found in those natural intermissions which are given by daily sleep and daily food, and the essential and restful pause of Sunday. Such a condition of continuous and wholesome activity, interrupted only by these natural pauses, is the happiest condition on earth, and no man should wish for himself any other outward happiness. Indeed, we may go a step farther and add that it does not very much matter what the nature of this activity may be. Genuine activity, which is not mere sport, has the property of becoming interesting as soon as a man becomes seriously absorbed in it. It is not the kind of activity which ensures happiness to us; it is the joy of action and attainment. The greatest unhappiness which one can experience is to have a life to live without a work to do, and to come to the end of life without its fruit of accomplished work.