Upton Sinclair
(September 20, 1878 – November 25, 1968)
Upton Beall Sinclair Jr. was a Pulitzer Prize (1943 in Fiction) winning American author, muckraker, political activist, and the 1934 Democratic Party nominee for governor of California. He was known for his efforts to expose corruption in government and business in the early 20th century. His most famous work is The Jungle (1906) and his most famous quote is: "It is difficult to get a man to understand something, when his salary depends upon his not understanding it."
Sinclair became interested in occult phenomena and experimented with telepathy. His book Mental Radio (1930) included accounts of his wife Mary's telepathic experiences and ability.