You need both. Being an ignoramus but having all attitude makes you like the emperor with no clothes - everyone will easily see through your charade and afford

You need both. Being an ignoramus but having all attitude makes you like the emperor with no clothes - everyone will easily see through your charade and afford you the corresponding amount of respect. Likewise, being super knowledgable while being very timid or always finding the dark spots in the silver lining isn't very useful. You can't put that knowledge to use. That's why you need both. You also need someone who's honest and will tell you which one you should be working on. It's a mistake to work on one to the exclusion of the other. Keep them in balance and you'll go far!