-- Jack Welch
No matter who you are, you need two kinds of friends in your life. The first kind is one you can call when something good happens, and you need someone who will be excited for you. Not a fake excitement veiling envy, but a real excitement. You need someone who will actually be more excited for you than he would be if it had happened to him.
The second kind of friend is somebody you can call when things go horribly wrong, when your life is on the line and you only have one phone call.
-- Ben Horowitz