"The one characteristic for which Van Buren was famous was the one that suggested perhaps he was not always under control. This was his political ruthlessness. He was ruthless enough to stick with William Harris Crawford long after the Georgian had suffered a disabling stroke. He kept plotting to keep John Quincy Adams from the presidency in 1825. He cleared out most of the Adams postmasters in New York in 1829. As the stories about him spread, he acquired the nicknames of "Little Magician" and "Sly Fox." His reputation and political skill gave him a place in history, but he hated the image and sought steadily to be something else. He might have been a more successful President if he had been more willing to exploit his reputation."
January 1, 1970
https://en.wikiquote.org/wiki/Martin_Van_Buren