In regard to the first, the limitation of attention, I understand that, after all, our specialty cannot fill our entire life. We do sometimes sit down to dinner; we occasionally talk with a friend; we now and then take a journey; we permit ourselves from time to time to read some other book than one which refers to our subject. That is, I take it, if we are fully alive to the great danger that in specializing we are cutting off a large part of the universe, we shall be wise in gathering eagerly whatever additional knowledge we may acquire outside our specialty. And I must say that the larger number of eminent specialists whom I have happened to know have been men pretty rich in knowledge outside their specialties. They were men who well apprehended the extreme danger of their limited modes of pursuit and who greedily grasped, therefore, at every bit of knowledge they could obtain which lay beyond their province. They appropriated all the wisdom they could; and merely because it did not exactly fit in with their specialty, they did not turn it away. I do not know how far it is wise to go in this effort to repair the one-sidedness in which most of us are compelled to live. A rather extreme case was once brought to my attention. There was a student at Harvard who had been a high scholar with me, and I found that he was also so specializing in the classics that when he graduated he took classical honors. Some years later I learned that he was one of the highest scholars in the Medical School. Meeting him a few years after he had entered his profession, I asked, "How did it happen that you changed your mind so markedly? You devoted yourself to classics and philosophy in college. What made you finally decide to become a physician?" "Finally decide!" said he. "Why, from childhood up I never intended to be anything else." "But," I persisted, "I cannot be mistaken in recalling that you devoted yourself in college to classics and philosophy." "Yes," he said, "I did, because I knew I should never have another chance at those subjects. I was going to give the rest of my life to medicine, so I took those years for classics and philosophy." I asked, "Wasn't that a great mistake; haven't you now found out your blunder?" "Oh, no," said he, "I am a much better physician on that account; I could not have done half so well if I hadn't had all that training in philosophy and classics." Now I cannot advise such a course for everybody. It takes a big man to do that. If you are big enough, it is worth while laying a very broad foundation; but considering the size on which most of us are planned, it is wiser to begin early and specialize from the very start.