It is necessary to be interested in the activities about us. Those who think of nothing or no one except themselves are almost dead to the world, even though they go through the same physical activities as other people. The tendency is to get into a rut with advancing years and remain there. It is easy to keep both a pliable mind and a pliable body in spite of age, and this can be done by intelligent use. A short time daily should be spent in becoming informed of what is happening throughout the world and thinking it over. A mental hobby is most excellent. A garden or a few birds can furnish an almost inexhaustible source of interest. Those who doubt this should read of the comedy and tragedy among such humble beings as the spider, the fly and the beetle. J. H. Fabre has written charmingly about these, investing them with an interest rarely to be found in good fiction. This naturalist is a good example of what can be accomplished when one has years to do it in and is content to labor along from day to day without giving too much thought for the morrow. At fifty Mr. Fabre was practically unknown. Now, at about ninety, he is one of the most admired and best loved of men. His recognition came late and he has done much of his best work during his later years. If Mr. Fabre had died at the average age of forty, the world would have been deprived of his beautiful insight. Another cause of old age is getting mentally old. An individual begins to grow old by dwelling on the subject. The girl of thirteen must cease romping and racing about because it is not lady-like. At twenty-five it is very, very undignified to run a little. At forty a woman must be rather sedate, for being natural would mean frivolity. People are continually growing too old to do this and that, not because they have lost the desire and the ability, but because it is unbecoming at their age. This is folly. Keep a young heart all through life. A heartfelt laugh is one of nature's best tonics. There is no more harm in dancing at fifty than at fifteen and not so much danger. The relaxation of muscles and sagging of the face are as much the result of mental attitude as of loss of tonicity. Thinking young and associating with children are helpful and healthful. People who are very stiff and dignified are mentally sterile. The charming people are the ones who are willing and able to understand and sympathize with the aims and aspirations of others, and in order to do so it is necessary to thaw out. The art of life is delightful if properly developed.