There are many theories about where Lincoln's expression of "government of the people, by the people, for the people" came from. In "The American Monthly Review of Reviews", it is suggested that the writings of William Herndon, Lincoln's law partner, much influenced Lincoln. William Herndon wrote in "Abraham Lincoln: The True Story of A Great Life" that he had brought some of the sermons of abolitionist minister Theodore Parker to Lincoln, who had been moved by them.