In such experiences we seem to have a condition of great interest and also of practical importance. Physical infirmity and accident which compel special attention to body-keeping often result in such added care to hygienic condition that we are actually better and more effective for the impairment. Just as an old man who takes special care not to fall or to take risks is often safer from injury than a stronger and less careful man, so in mental work consciousness of certain shortcomings may act as a spur to take more pains and so to do superior work. To this is added another stimulus. A senescent knows that his friends and enemies will be liable to ascribe any imperfections in his intellectual output to failing powers, and his horror of betraying this is an added incentive to do his very best. If his last product could be his best, he could die happier, and he cannot bear the thought of exhibiting signs or stages of senile debility. To be willing to accept the allowances that his hostile or even his amiable critics would be willing to make for his years is craven. His chief danger is lest the standards of self-censorship for his performances should unconsciously decline and that he should come to judge his own inferior work as superior. Of this the history of literature has countless examples, more perhaps than of the opposite tendency. Unquestionably, too, there is a certain maturity of judgment about men, things, causes, and life generally that nothing in the world but years can bring, a real wisdom that only age can teach. But to observe and rely on this to compensate for thoroughgoing rigorism in demonstration or mastery of copious details is a fatality too often seen. Finally, we must realize that our own brain work must be done with less of the afflatus that often aided us in youth or in maturity. Once our best ideas came to us in heat after a warming up of our faculties, perhaps into an erethic or second-breath state. We found ourselves in the grip of a sort of inspiration that carried us on perhaps far into the night or impelled us to exceptional activities for days or even weeks and brought a reaction of lassitude in its train. But now, not only is this generally less or lacking but our mentation must be more stated, our hours of intense application must be kept within bounds, and there is the perennial danger of overdoing and its penalties are surer and more severe. Thus with age we must develop a new system or method that recognizes and comports with our true mental age. We must have safely passed the Scylla and Charybdis of affecting to be younger than we are and of aping or adhering too conservatively to the manners of thought and feeling characteristic of earlier youth, on the one hand; or, on the other, we must escape the opposite attitude that often supervenes later in the very old of vaunting their years and posing as prodigies of senescence. In a word, the call to us is to construct a new self