Do What You Love: Ray Bradbury and Isaac Asimov

Ray Bradbury and Isaac Asimov on why you should do what you love; with love and passion, you learn and do your great work, and live a happy life.
Sources:
1. Ray Bradbury, Day at Night, 1974
2. Isaac Asimov with Bill Moyers, World of Ideas, 1988
3. Ray Bradbury, 09, Columbia College Commencement
4. Isaac Asimov with Charlie Rose, 1985
5. Interview with Isaac Asimov, 1975