Perseverance: Why It Was Southwest Airlines’ Herb Kelleher’s Most Important Lesson for Entrepreneurs Posted byAlex Gold February 4, 2019 Leave a comment on Perseverance: Why It Was Southwest Airlines’ Herb Kelleher’s Most Important Lesson for Entrepreneurs Sadly, Kelleher died last month. But his legacy lives on: Ever hear of how he and his airline became Texas’s largest bourbon distributor?