I've often said that there a million men in this country who could have done the job I did as president, or who were qualified for the job. I think that's true, but they didn't have the chance. A great many men who are well qualified to be chief executive have been passed up and overlooked. It takes luck, conditions that prevail at the time, and when the right moment comes, ability to meet that situation. Perhaps I shouldn't say that myself because I was finally nominated and elected president of the United States. But it's true.
Harry S. Truman, Where The Buck Stops: The Personal and Private Writings of Harry S. Truman