Very sad to see this.

Bogle spent a lot of time (and gave up the opportunity for a lot of money) preaching to people about how wealth can be accumulated. He really had a heart for helping people.

Watch some of his interviews on YouTube. He speaks very clearly, but it's easy to see he was a brilliant man.

Unless you're already a 'Boglehead': If you get ONE thing out of today's Hacker News, take an hour and learn the simple message John Bogle preached. Your future self will thank you profusely.