If you've ever worked for a truly great boss then you know that the difference between a good boss and a terrific boss can be huge. And the difference between a bad boss and a great boss? An indescribable chasm.

Working for a great boss means more than just a happy working environment. A great boss who really cares can move your career along in unexpected ways. She can network you with the right people, mentor you to develop leadership skills, smooth the way to a new promotion, or just be there to listen when you're not sure what to do.

Some of the most inspiring leaders we interviewed for The Art of Business knew exactly what it took to be good bosses. Here are their lessons in their own words:

Gordon Moore
Chairman Emeritus, Intel
Embrace Mistakes
"One thing a leader does is remove the stigma of mistakes. People who are terrified of making mistakes all the time just don't try anything."

Herb Kelleher
Chairman, Southwest Airlines
Come From the Heart
"When we talk to people about Southwest Airlines, I always tell them that it's got to come from the heart, not from the head. It has to be spontaneous, it has to be sincere, it has to be emotional."

John Wooden
Former Coach, UCLA Bruins
Listen to Learn
"One learns by listening. We listen when we read, with our ears, with our eyes, with our feelings-that's listening. Listen to the wind, the stars."

Earl Bakken
Co-founder, Medtronic
Meaningful Mission
"If you have a mission with a human purpose, profit will take care of itself if you operate wisely."