Much like John Stuart Mill, it turns out that Charles Munger cared a lot about people earning their right to an opinion by knowing the other side of the argument. I couldn’t agree more.

I never allow myself to have an opinion on anything that I don’t know the other side’s argument better than they do.

Good, how about another one?

We all are learning, modifying, or destroying ideas all the time. Rapid destruction of your ideas when the time is right is one of the most valuable qualities you can acquire. You must force yourself to consider arguments on the other side.

And finally;

The ability to destroy your ideas rapidly instead of slowly when the occasion is right is one of the most valuable things. You have to work hard on it. Ask yourself what are the arguments on the other side. It’s bad to have an opinion you’re proud of if you can’t state the arguments for the other side better than your opponents. This is a great mental discipline.