I imagine you already know that I am much more socialistic in my economic theory than capitalistic... [Capitalism] started out with a noble and high motive... but like most human systems it fell victim to the very thing it was revolting against. So today capitalism has out-lived its usefulness.
(Letter to Coretta Scott, July 18, 1952)
One day we must ask the question, "Why are there forty million poor people in America?" ... When you ask that question, you begin to question the capitalistic economy.
(Final speech to the Southern Christian Leadership Conference, 1967)