FDR on American principles

Mark Alexander writes on useful idiots:

FDR, perhaps unwittingly, used the Great Depression to establish a solid foundation for socialism in America, as best evidenced in this dubious proclamation: "Here is my principle: Taxes shall be levied according to ability to pay. That is the only American principle."

....Soviet dictator Nikita Khrushchev said of Roosevelt's "New Deal" paradigm shift, "We can't expect the American people to jump from capitalism to communism, but we can assist their elected leaders in giving them small doses of socialism, until they awaken one day to find that they have communism."

Not just AN American principle, the ONLY one. Interesting. I would submit to every conservative defender of WWII-internment that any time you discover that your opinion is running in parallel with FDR's, you should probably consider taking a good hard look at your reasoning to figure out where you went off the rails of fact, logic and true American principle.