Readers respond to a guest essay by Danielle Sassoon about her experience at N.Y.U. Also: A crackdown on science; a plea to the former presidents. Shutting out China’s best minds will only push them ...

Sampling the outpouring of responses to a column by Ross Douthat about the East Wing and the ballroom. Also: Everyday acts of grace; Canada and President Trump. There are still dozens of library ...