The Special Focus on invitation policy at universities contains a target article by Romy Jaster and Geert Keil, five commentaries, and a response. The question under discussion is what disqualifies a person from being invited to speak at a university. On liberal, Millian approaches, the epistemic benefits of free speech preclude no-platforming policies. More restrictive approaches demand the exclusion of speakers who are considered racist or otherwise hostile against marginalized groups. Jaster and Keil take a virtue-based approach to invitation policy: (...) A person is ineligible as a speaker if she exhibits specific intellectual vices that are detrimental to the pursuit of truth, the university’s raison d’être. The five critics raise various concerns. Birgit Recki deems the virtue-based approach too restrictive: It is prone to exclude some speakers who make intellectually stimulating contributions. Eva von Redecker and Daniel Loick deem the criterion too permissive: It allows for contributions that should have no place on campus. Dieter Schönecker and Maria-Sibylla Lotter object that the approach is silent on all recent actual cases of ‘cancelling’ at universities. In their response, Jaster and Keil address these concerns and clarify their position. (shrink)