I think this trait is one of the defining things that sets magicians apart from more ordinary folk. When I say magicians I'm really talked about true magicians not the 'hope' magicians that are so prevalent. Even if you are the most maniacal, self-centered mage on earth if you're a real mage, when you deal with magic or powerful entities you know and understand the danger, which to me is humility. So I would say that humility is of great importance to all those seekers of knowledge because it acts as fear would only on a more sublime and subtle level, whereas fear is most often poisonous to the body, mind and soul. Having said that I wonder if there's such a thing as too much humility? Being a big non-easterner I admit to find their utterly self effacing ways to be far too morbid for my liking.