Free-thinking used to be a crime but is critical to any healthy civilization. This is one point explicated by English philosopher John Stuart Mill in On Liberty, which also addresses the need for intellectual progress and where our right to do as we please begins and ends.
In five sprawling essays tied together by the theme of liberty but also the objectives and needful limitations of society, Mill lays out one of his most famous cases, for why people should be able to do pretty much whatever they want so long as they hurt no one doing it.
He also has at orthodoxy in many forms, which no doubt disquieted religious readers but clearly impressed a large part of England’s educated classes. On Liberty was a milestone in the development of civil liberties and democratic institutions around the world.



