The piece by President Eisgruber ’83 titled “Free Speech at Princeton” (President’s Page, June 7) is a welcome statement of what a Princeton education should be all about. Fifty years ago I remember a Euro History course covering roughly 1770 through 1848 taught by a conservative historian. Following that course, Arno Mayer taught Euro History from 1848 through roughly 1920 from a Marxist viewpoint. It was fascinating to view history from two radically different viewpoints and opened our eyes to different ways of looking at things, and thus we developed a respect for those differences. Thanks to President Eisgruber for reaffirming Princeton’s dedication to free and open discussion, no matter how offensive.