When nature removes a great man, people explore the horizon for a successor; but none comes, and none will. His class is extinguished with him. In some other and quite different field, the next man will appear.
Focusing your life solely on making a buck shows a certain poverty of ambition. It asks too little of yourself. Because it's only when you hitch your wagon to something larger than yourself that you realize your true potential.
On occasion we need to make a second effort - and a third effort, and a fourth effort, and as many degrees of effort as may be required to accomplish what we strive to achieve.