As someone who who doesn't believe the wrong of liberal bias in the classroom should be countered with the creation of conservative bias in others--the "what kind of sheep shall we raise" argument is not convincing to people such as myself who are not interested in herding any sheep--I was particularly interested in this bit from a fascinating Opinion Journal interview with Thomas Sowell.
Mr. Sowell may be an unabashed free-market adherent, but he's proud to say that Professor Sowell left his personal views out of the classroom. In his 2000 memoir, "A Personal Odyssey," he relates an episode in which some students approached him after taking his graduate seminar on Marxian theory. They expressed appreciation for the course but added, "We still don't know what your opinion is on Marxism." He took it as an unintended compliment.