The trick generally is to break programs into pieces and have those pieces be individually testable and so then when you move on to the other pieces you treat it as a black box knowing that it either works or doesn't work.

Some people, through luck and skill, end up with a lot of assets. If you're good at kicking a ball, writing software, investing in stocks, it pays extremely well.

I have a nice office. I have a nice house... So I'm not denying myself some great things. I just don't happen to have expensive hobbies.

I never took a day off in my twenties. Not one.

The billion people who wake up every day trying to figure out if they have enough food to eat won't be at Davos.

Only a few businesses will succeed by having the lowest price, so most will need a strategy that includes customer services.

Microsoft has had clear competitors in the past. It's a good thing we have museums to document that.