I am reading Jeff Bussgang's book and came across a great quote.  If you are an entrepreneur talking to a bunch of VCs and trying to make sense of the process, or trying to decide if you can be partners with that guy across the table from you, I don't think you can go wrong this line of thinking from Twitter's Jack Dorsey:

Is this guy fun to work with? Is he going to challenge us? Is he smart? This person was going to take a seat on the board. I viewed it as a hire that we could never fire.