Mistakes are the best teachers. One does not learn from success. It is desirable to learn vicariously from other people's failures, but it gets much more firmly seared in when they are your own.

There is no such thing as a value trap. There are investing mistakes.

One of the first things I tell people is, if you want to learn about investing, you want to open an account and make real investments because that's when it becomes real.

I think a lot of people are getting more serious about how to do the most good, but there is no road map. I'm hoping I can offer an example.

To the extent societal rules or the wiring of your brains make it easy to acquire a lot of assets, then to the extent you can, you should try to improve the world.

We Americans love original ideas. But truly, there are already plenty of good ones out there, ours for the taking. If I were too proud to copy the ideas of others, I likely wouldn't have even a fraction of my current success.