From Tim: Charlie Munger on the Dangers of Ideology and How to Form Intelligent Opinions
- Jul 4, 2025
- 1 min read
Updated: Sep 21, 2025

From Tim: Really enjoyed this piece; a reminder of how easy it is to fall in love with an idea, especially when it feels exciting or full of potential (something that happens a lot in my line of work and I suspect I’m not alone). It makes the case that good thinking takes more than just conviction.
One simple exercise I’ve kept coming back to since reading it: If I had to argue the opposite (if I had to convince someone not to move forward) what would I say?
It’s not about being contrarian. It’s about building the kind of rigour that can hold belief and doubt, curiosity and challenge. That’s where better decisions and deeper thinking come from.

Really enjoyed this piece which was full of wisdom and inspiration. I especially loved this quote by Charlie Munger: “I’m not entitled to have an opinion on this subject unless I can state the arguments against my position better than the people do who are supporting it. I think that only when I reach that stage am I qualified to speak.”
Two thoughts: I observe that Tim applied this to ideas, where as I instinctively applied it to opinions. Is it easier to apply it to ideas, eg new project ideas, new possible investments, new decisions - in which it simple falls into due diligence. Where as applying it to opinions is perhaps more difficult. Thanks to Think Again, I…