A man who stays long in our American political life, if he has in his soul the generous desire to do effective service for great causes, inevitably grows to regard himself merely as one of many instruments, all of which it may be necessary to use, one at one time, one at another, in achieving the triumph of those causes; and whenever the usefulness of any one has been exhausted, it is to be thrown aside. If such a man is wise, he will gladly do the thing that is next, when the time and the need come together, without asking what the future holds for him. Let the half-god play his part well and manfully, and then be content to draw aside when the god appears. Nor should he feel vain regrets that to another it is given to render greater services and reap a greater reward. Let it be enough for him that he too has served, and that by doing well he has prepared the way for the other man who can do better.

Theodore Roosevelt (1858–1919) American politician, statesman, conservationist, writer, US President (1901–1909)
Autobiography, ch. 3 “Practical Politics” (1913)
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