Academic Freedom, Free Speech, and Harlow Shapley
"Academic freedom is much more restrictive than free speech, as one is concerned with free enquiry within a scientifically-established body of thought, while the other is concerned with the liberty of any individual to express his personal thoughts. One of the more notorious episodes of a scientist confusing academic freedom with free speech is the attempt of Harlow Shapley, a director of Harvard College Observatory, to halt publication of Immanuel Velikovsky's book Worlds in Collision..."
Wow, Sagan’s widow, what a surprise. :’) Thanks FN!