Feeling, we found, is the first expression of mind--feeling which in the early months is entirely selfish. The happiest baby you know is not sweet and winning to please you, but because he feels comfortable and happy and cannot keep from expressing it. His universe is his own little self and you exist only in your relation to him. If you give him pleasure he likes you; if pain, he does not want you. His mother often fails to please him, but satisfies him so much more frequently than anybody else that he loves her best. Then comes nurse or father--if he proves the satisfactory kind of father, or she a nurse he can love. To the baby whatever he happens to want is good. What is not desirable is bad. And such emotional responses are altogether normal in early months, yes, even until the child is old enough to use reason to choose between two desires the one that will in the end prove more satisfying. But they are defects in adult life. The nurse who would always act as her first feeling dictates would not be in training many days. Unpleasant sights and sounds, the fear of making a mistake which might harm a patient, the undesirability of long hours of hard work in caring for patients who frequently only find fault with her best efforts, would early decide her in favor of another life-work. Comparatively few so-called "grown-ups" are guided only by feeling; and most of those are in institutions that are well safeguarded. But a great many mature men and women allow feeling to unduly influence their thinking. The sentimental nurse, for instance, may find it very difficult to give an ordered hypodermic. The patient dreads the pain and the nurse fears hurting her. Suppose she were to fail to give it on such grounds. This is an almost unthinkable case. But the very nurse who agrees that such an emotional weakling should not be allowed to train, will help her patient, even when recuperating nicely, to grow inexcusably self-centered, by sympathizing with every complaint, warning her at every turn, by allowing her and even encouraging her, perhaps, to discuss her illness and suffering in the minutest detail. This nurse is more damaging than the sentimentalist who fails to give the hypodermic; for that slip is easily discovered, and the transgressor must immediately reform and obey orders, or be dismissed. But the second nurse may take perfect care of the sick body, and the doctor never realize that she is developing the sickness idea in her patient's mind.