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.

There's actually a wonderful quote from Stanley Fish, who is sometimes very polemical and with whom I don't always agree. He writes, "Freedom of speech is not an academic value. Accuracy of speech is an academic value; completeness of speech is an academic value; relevance of speech is an academic value. Each of these is directly related to the goal of academic inquiry: getting a matter of fact right."

Freedom of speech is about expressing your opinion, however bad or good, however right or wrong, and being able to defend it and argue it and be argued with about it in public forums. But that's not what academic freedom is about. That's not what the classroom is about.

The Trump election brought it the fore and made it possible for a number of different groups whose aim is to stop the teaching of critical thinking to to launch direct attacks.

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.

I don't think colleges are safe spaces. It's one thing to have a fraternity house or a community center where students can go and talk about their shared experiences. But it's another thing to have safe spaces in the sense that the university's providing them with protection from what they have to experience and find ways of protesting and resisting.

The common good is the notion of shared collective responsibility and reciprocity. It's that that we've lost.