Not to accumulate instances tediously, it need only be added that, in making a survey of the biographies of a thousand eminent British men and women, the English psychologist, Havelock Ellis, found that only forty-four were specifically mentioned as not having been precocious, while nearly three hundred were mentioned as having been distinctly precocious in one sense or another. Even in the case of the forty-four, Mr. Ellis discovered, several were really as precocious as any of the three hundred, being “already absorbed in their own lines of mental activity.” To this class belong, for example, Landor, Byron, and Wiseman, the last of whom is described as having been in boyhood, “dull and stupid, always reading and thinking.” Nor, according to the results of Mr. Ellis’s investigation, did precocity have any unfavourable effect on the health of these men and women of genius. All similar investigations, in fact, go to show that intellectual activity makes for longevity—that those who think hardest are likely to live longest. Of one group of nearly eight hundred and fifty men of genius it was found that only two hundred and fifty died before they were sixty years old, while one hundred and thirty-one lived to be eighty or older. For another group of five hundred, an average life-span of nearly sixty-five years was found, as against a life-span of fifty-one years for all classes of people who pass the age of twenty. In the case of still another group, studied by a third investigator, an average of seventy-one years was established. What gives these figures greater significance is the fact that in many instances the man of genius is exceptionally frail in early life. Mr. Ellis, in his statistical study, found that more than two hundred—or more than 20 per cent. of the eminent men and women included in his survey—were “congenitally of a notably feeble constitution,” yet that among these were some of the longest lived. How is this to be explained? Only on the theory that the joy they felt in doing work congenial to them promoted bodily as well as mental vigour. And, in point of fact, it is to-day a commonplace among psychologists that pleasurable emotions make for increased strength, while disagreeable feelings make for weakness. Viewed from whatever angle, therefore, “being interested” is one of the most important things in the world to every one of us. The earlier we become interested—intensely interested—in some specific field of activity, the brighter our future prospects will be.