There's a quote which Warren Buffett has repeated many times to groups and in interviews that has a permanent place in my memory: "What we're looking for when we hire somebody... we're looking for intelligence, we're looking for energy, and we're looking for integrity. And if you don't have the last, the first two will kill you."
"If you hire somebody without integrity, you really want them to be dumb and lazy, don't you? I mean, The last thing in the world that you want is for them to be smart and energetic."
From the man himself in under 30 seconds...
https://www.youtube.com/Warren Buffett: Intelligence, energy, integrity