Mr. Lake, National Security Advisor under Clinton, reflects on his Middlesex experience. When Anthony Lake ‘57 first arrived at Middlesex in the early 50s, both the world and the school looked very different. The campus was all boys, all white, and as he recalls with wry understatement, “rather uniform in its views.” In a community where most students and teachers leaned Republican, Mr. Lake recalls that he “somehow” became one of only a handful of self-proclaimed Democrats — a choice, he…