During my first semester of college I told a professor that I wanted to go to graduate school to become a professor. He very wisely replied, “Jon, get a real job and do history on the weekends.” As a senior, another professor told me, “Don’t get a PhD in history unless you can’t see yourself doing anything else.” Both offered sound advice, and I hope they will forgive me for not taking it. Now, as a tenured faculty member, I often find myself giving advice about graduate school to my students. I usually give them...