I disagree with what you say but I'll defend to the death your right to say it.I can't remember how many times I have heard somebody repeat that phrase on talk radio, but I suspect often disingenuously. I like the addition to that quote that Keith Taylor added in his article "Grumble Grumble" in Skeptical Inquirer, Vol 37 Issue 4. p54. Because it reflects my experiences so closely and because showing a snapshot of the article adds to my credibility, I have attached the major portion of it. Just click the <Read more> at the bottom of this post.
It's remarkable the trash people circulate on the internet. I also like Keith's comment
"If you don't want your ideas challenged, don't send them to people who think."