There's life and death in every email.

Giving money effectively is almost as hard as earning it in the first place.

OK, I have a nickname. My family calls me 'Trey' because I'm William the third. My dad has the same name, which is always confusing because my dad is well known, and I'm also known.

Change the boundaries of business.

You've got to be willing to read other people's code, then write your own, then have other people review your code.

Imagine, just for the sake of discussion, that you had a few hours a week and a few dollars a month to donate to a cause - and you wanted to spend that time and money where it would have the greatest impact in saving and improving lives. Where would you spend it?

I have been struck again and again by how important measurement is to improving the human condition.