Read through the beginning of a persuasive novel titled "The Strenuous" by Theodore Roosevelt in 1899. You work yourselves, and you bring up your sons to work. If you are rich and are worth your salt, you will teach your sons that though they may have leisure, it is not to be spent in idleness; for wisely used leisure merely means that those who possess it, being free from the necessity of working for their livelihood, are all the more bound to carry on some kind of non-remunerative work in science, in letters, in art, in exploration, in historical research-work of the type we most need in this country, the successful carrying out of which reflects most honor upon the nation. We do not admire the man of timid peace. We admire the man who embodies victorious effort, the man who never wrongs his neighbor, who is prompt to help a friend, but who has those virile qualities necessary to win in the stern strife of actual life. It is hard to fail, but it is worse never to have tried to succeed. In this life we get nothing save by effort. Freedom from effort in the present merely means that there has been stored up effort in the past. A man can be freed from the necessity of work only by the fact that he or his fathers before him have worked to good purpose. If the freedom thus purchased is used aright, and the man still does actual work, though of a different kind, whether as a writer or a general, whether in the field of politics or in the field of exploration and adventure, he shows he deserves his good fortune. 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. 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. Identify the sentence or phrase that serves as the rebuttal to Roosevelt's argument
