both doubt and certainty are as contagious as the common cold

wrongness always seems to come at us from left field - that is, from outside ourselves. But the reality could hardly be more different. Error is the ultimate inside job. Yes, the world can be profoundly confusing; and yes, other people can mislead or deceive you. In the end, though, nobody but you can choose to believe your own beliefs.

The kinds of things that we can make mistakes about are essentially unlimited in number.

If you Google 'regret and tattoo,' you will get 11.5 million hits.

I had drunk our great cultural Kool-Aid about regret, which is that lamenting things that occurred in the past is an absolute waste of time, that we should always look forward and not backward, and that one of the noblest and best things we can do is strive to live a life free of regrets.

A whole lot of us go through life assuming that we are basically right, basically all the time, about basically everything: about our political and intellectual convictions, our religious and moral beliefs, our assessments of other people, our memories, our grasp of facts. As absurd as it sounds when we stop to think about it, our steady state seems to be one of unconsciously assuming that we are very close to omniscient.

If you want to live a life free of regret, there is an option open to you. It's called a lobotomy.