Many of Robert Anton Wilson's pieces in favor of a basic income were written at a time when the notion was a radical idea, being considered by almost nobody else. Now it's an idea that being discussed widely; I spent this morning reading pieces about it.
Tyler Cowen has written about it again with "My Second Thoughts About Universal Basic Income." Negative thoughts about the proposal also are available in this essay.
In response to Cowen's piece, Arnold Kling and Will Wilkinson have written rebuttals. Wilkinson has promised a follow-up piece, which I hope he will post soon.
I get Cowen's point that a work ethic is important, but as Wilkinson and Kling point out, UBI is generally considered an alternative to the existing welfare system, which also has disincentives to work. It seems to me that a basic income could promote work, if it made it easier to take a low-paying job.