Who most deserves an apology from you, and why?

I've mentioned that we strongly prefer to use cash rather than Berkshire stock in acquisitions. A study of the record will tell you why: If you aggregate all of our stock-only mergers (excluding those we did with two affiliated companies, Diversified Retailing and Blue Chip Stamps), you will find that our shareholders are slightly worse off than they would have been had I not done the transactions. Though it hurts me to say it, when I've issued stock, I've cost you money.

My ex-wife Caroline, because she found my style of life rather irritating.

I’ve said sorry to everybody I wanted to – I’m good at saying sorry quickly.

To my parents, for being such a bitch.

To my younger self. I was incredibly self-loathing and self-doubting, and I’m still undoing that damage 30 years later.