identify the sentence or phrase that serves as the rebuttal to roosevelt's argument. "a mere life of ease is not in the end a very satisfactory life, and, above all, it is a life which ultimately unfits those who follow it for serious work in the world." "but if he treats this period of freedom from the need of actual labor as a period, not of preparation, but of mere enjoyment, even though perhaps not of vicious enjoyment, he shows that he is simply a cumberer of the earth's surface, and he surely unfits himself to hold his own with his fellows if the need to do so should again arise." "it is hard to fail, but it is worse never to have tried to succeed. in this life we get nothing save by effort." "we do not admire the man of timid peace."