“Unlike freedom of speech, freedom of thought seems to be a natural attribute of humans. After all, thoughts are, by contrast to words, both inaudible and invisible – and therefore they appear to be beyond the grasp of censors. […] In fact, the conviction that thoughts are really free is deeply rooted in different languages. For example, the famous Latin maxim Cogitationis poenam nemo patitur appears in English as Thoughts are toll-free, in German as Gedanken sind Zoll frei a...
