A great chef has the following 5 attributes: First, they take their work very seriously and consistently perform on the highest level. Second, they aspire to improve their skills. Third is cleanliness. If the restaurant doesn’t feel clean, the food isn’t going to taste good. The fourth attribute is impatience. They are not prone to collaboration. They’re stubborn and insist on having things their own way. What ties these attributes together is passion. That’s what makes a great chef.
-Masuhiro Yamamoto, from David Gelb's beautiful Jiro Dreams of Sushi