A MUST-READ FOR POTENTIAL SNOWFLAKES: All Minus One, a beautifully illustrated and smartly abridged version of John Stuart Mill’s arguments for free speech in “On Liberty,” is just out at Heterodox Academy, which hopes it will become required reading for students before they enter college. Here’s a conversation about Mill — and why he’s more relevant than ever — with Richard Reeves, the Mills biographer who edited this book together with Jonathan Haidt.