The explosion of Safe Spaces on university campuses shows where censorship leads if you let it run rampant. That is, nowhere. Political, intellectual and scientific progress is incumbent upon the free exchange of ideas, allowing the space for bad, old ideas to be challenged and good, new ideas to emerge. Safe Spaces are not only censorious – they’re cowardly. They encourage students to barricade themselves in with the likeminded, wallow in their own self-righteousness, and never bother with trying to engage with, let alone change, the world around them.