Mistakes of omission

I’ve made all kinds of huge mistakes of omission. The ones of commission show up in accounting. If I buy something for $1 and sell it for 50 cents, it shows up.… We’ve made relatively minor mistakes of commission. Those aren’t the ones that bother me. The acts of omission that I’m talking about are things within my circle of confidence, things I could understand, did understand, and didn’t do anything about. I was sucking my thumb. Those are the big mistakes.