The thing about education - and why I'm so passionate about the position and status of the university - is that it's supposed to teach citizens how to think better, how to think critically, how to tell truth from falsehood, how to make a judgment about when they're being lied to and duped and when they're not, how to evaluate scientific teaching. Losing that training of citizens is an extremely dangerous road to go down.

If the students don't want to learn about evolution, they shouldn't be in the course. A biology course that teaches creationism is not a science course, it's a religion course. So the students demanding that creationism be given credence in that course are out of line and are denying the academic freedom of the professor. They are calling into question the scientific basis of the material that's being presented. And students are not in a position to do that.

We've increasingly lost that sense of community, of the notion that there is something we contribute to and benefit from that is called the common good.

I think the anger that is being directed to universities and so-called elites at universities is actually an anger that's displaced from politicians (who promise to make things better and never do), from employers, it's an anger at the economic system that has put so many of these people out of the kind of work that once was so satisfying to them.

Free speech is what we all have and is guaranteed by the First Amendment of the US Constitution. Academic freedom refers to what happens in the university, particularly in the classroom, and to the importance of the teacher having the right to teach and share what he or she has learned, has proven her competence to teach, having gone through a series of tests and certifications including research and writing to demonstrate her abilities and knowledge.

I think what is being pointed out by African-Americans is that from slavery forward they have been living in a supposed democracy which treats them as less than other citizens, less than whites in the society. And I think that pointing out that there are structures of discrimination in the society, deeply rooted racist structures, that segregate housing, that send black children to ill-equipped schools, that discriminate in the workplace - these are truths about our society that must be faced.

Those who expect moments of change to be comfortable and free of conflict have not learned their history.