From a commencement addressed never commenced:
In a complicated world, good intentions can have terrible consequences. One hundred years ago, many well-intentioned people championed Communism. When Lenin took power in Russia in 1917, he actually believed that the economy would organize itself, and that without profits production would be more efficient and more equitable. When both his ideas and his leadership proved unpopular, he responded with ruthless tyranny. His took his self-righteousness to a mad extreme, but I am afraid that there is a little bit of Lenin lurking among all of those who are so certain that community service is morally superior to business.
-Arnold S. Kling, as excerpted from here