Intellectual humility is a key trait of great hackers and coworkers, in my experience.
Google's Laszlo Bock described hiring for intellectual humility like this...
"What we’ve seen is that the people who are the most successful here, who we want to hire, will have a fierce position. They’ll argue like hell. They’ll be zealots about their point of view. But then you say, ‘here’s a new fact,’ and they’ll go, ‘Oh, well, that changes things; you’re right.’ You need a big ego and small ego in the same person at the same time."
Google's Laszlo Bock described hiring for intellectual humility like this...
"What we’ve seen is that the people who are the most successful here, who we want to hire, will have a fierce position. They’ll argue like hell. They’ll be zealots about their point of view. But then you say, ‘here’s a new fact,’ and they’ll go, ‘Oh, well, that changes things; you’re right.’ You need a big ego and small ego in the same person at the same time."