The quotations below are found (and end-noted) in American Betrayal.

In a 1951 letter to Norman Thomas, perennial Socialist candidate for president in the 20th century, novelist and onetime Socialist candidate for Congress Upton Sinclair wrote:

"The American people will take Socialism, but they won't take the label."

Norman Thomas  wrote in 1953:

"Here is America more measures once praised or denouced as socialist have been adopted than once I should have thought possible short of a Socialist victory at the polls."

Thomas wrote in 1958:

"The United States is making greater strides toward socialism under Eisenhower than even under Roosevelt."

Thomas wrote in 1962:

"The difference between Democrats and Republicans is: Democrats have accepted the ideas of socialism cheerfully, while Republicans have accepted them reluctantly."