http://www.iep.utm.edu/tolerati/This came up because a local Christian told me in a comment to one of my comments on a letter to the editor that I should be ashamed of myself for tolerating 'immoral' lifestyles - specifically, homosexuality. I simply pointed out that toleration is at its heart self-control, which is one of the things Paul wrote of as a "fruit of the Spirit" in Galatians 5: 22-23, and suggested he think about that for a while.
I thought the article itself was interesting enough to post here, though.