FYI, Paranormalia has a fascinating review of Will Storr's book The Heretics, which includes some choice quotes from Storr's interview with James Randi (the one where he defends his social Darwinist position).
Asked if he approves of applying eugenics to the human population, Randi says:
"As long as it doesn't interfere with me and other sensible, rational people who could be affected by it. Innocent people, in other words. These are not innocent people. These are stupid people."
Note that he is careful to say that "something should be done seriously to educate them to prevent them from procreating," which suggests he's talking about voluntary restrictions, rather than mandatory sterilization. (On the other hand, it's not clear to me why he would worry about a purely voluntary program interfering with "sensible, rational people" like himself and his friends.)
But what I find most striking is the statement quoted above: "These are not innocent people. These are stupid people." Apparently stupidity, however it is defined, is not just a misfortune but an actual crime - or is it a sin? - in Randi's world.
In my opinion, this is an overvaluation of the intellect at the expense of other human qualities that can be just as important - things like kindness, caring, and the capacity to share love and experience joy.
To see people purely as cogitating machines is to miss a lot, I'd say.
Incidentally, Storr also quotes Randi as admitting that he sometimes lies about stuff. You don't say?