Look for 3 things in a person. Intelligence, Energy, & Integrity. If they don't have the last one, don't even bother with the first two.
Energy deregulation will be the largest transfer of wealth in history.
I will do anything that is basically covered by the law to reduce Berkshire's tax rate. For example, on wind energy, we get a tax credit if we build a lot of wind farms. That's the only reason to build them. They don't make sense without the tax credit.