The crackdowns on “wokeness” and “liberal indoctrination” in American higher education reached a ridiculous new low last week when a philosophy professor revealed that Texas A&M University objected to him including one of history’s most revered minds on a course syllabus. The forbidden readings came from Plato, the Athenian philosopher whose work is widely regarded as an important basis for Western thought over more than two millennia. This puzzling decision stems from an earlier controversy.