Intellectual and political polarization feed each other. It’s harder to be a conservative intellectual when American conservative politics has become steadily more know-nothing, from Ronald Reagan to Dan Quayle to George W. Bush to Sarah Palin to Donald Trump. On the other side, the capture of the left by identity politicians, political correctness police, and social justice warriors creates an opening for loudmouths who brag of “telling it like it is.” A challenge of our era is how to foster an intellectual and political culture that is driven by reason rather than tribalism and mutual reaction.

Steven Pinker, Enlightenment now: the case for reason, science, humanism, and progress, New York, 2018, pp. 374-375