Upton Beall Sinclair Jr. (September 20, 1878 – November 25, 1968), was a famous Pulitzer Prize-winning American writer who wrote about 100 books, notably “The Jungle” (1906) which exposed conditions in the US meat packing industry and led to health protecting legislation (see: http://en.wikipedia.org/wiki/Upton_Sinclair ).
Upton Sinclair on self-interest in public life and journalism: “It is difficult to get a man to understand something if his salary depends upon his not understanding it”. [1]
[1]. Upton Sinclair quoted in “Upton Sinclair: The Jungle and other novels”: http://www.squidoo.com/Upton-Sinclair .