You generally know when someone asks you to do something- am I more writing, or am I more editing? The editor is the best metaphor for your job.

The key to culture is it's a framework for making decisions. And if it's baked into your culture, people learn how to make decisions across that culture without you ever saying anything. You never have to really do anything except watch and promote and move people around.

Some people can't learn to play the guitar by reading a book. You have to actually try to manage a bit and you won't do well at first.

Don't accept the excuse of complexity. A lot of people will tell you, this is too challenging, this is too complicated, yeah well I know other people simplify but that's not for me, this is a complicated business. They're wrong. You can change the world in 140 characters.

The people that work with you should generally come up with their own initiatives.

It's easy to shortcut when you get busy explaining the why's of the world, but it's very important to try.

Basically this is what you want - a high performance machine that idiots can run.