Thanks to Evangelicals for Mitt for the scoop on this quote from John McCain. I didn't think it was legitimate at first, but it is from a speech he delivered at Liberty University's commencement this year. Here is the excerpt:

When I was a young man, I was quite infatuated with self-expression, and rightly so because, if memory conveniently serves, I was so much more eloquent, well-informed, and wiser than anyone else I knew. It seemed I understood the world and the purpose of life so much more profoundly than most people. I believed that to be especially true with many of my elders, people whose only accomplishment, as far as I could tell, was that they had been born before me, and, consequently, had suffered some number of years deprived of my insights. I had opinions on everything, and I was always right. I loved to argue, and I could become understandably belligerent with people who lacked the grace and intelligence to agree with me. With my superior qualities so obvious, it was an intolerable hardship to have to suffer fools gladly. So I rarely did. All their resistance to my brilliantly conceived and cogently argued views proved was that they possessed an inferior intellect and a weaker character than God had blessed me with, and I felt it was my clear duty to so inform them. It’s a pity that there wasn’t a blogosphere then. I would have felt very much at home in the medium.

With all due respect, I'm not sure McCain's views of himself have changed much with age.