Original sentence: He also imposed a sweeping and breathtakingly simple concept of honor — "We have but one rule, and it is that every student is a gentleman" — that endures today at Washington and Lee and at a few other schools that continue to maintain "honor systems
Edited sentence: He also imposed a sweeping and breathtakingly simple concept of honor — "We have but one rule, and it is that every student is a gentleman" — that endures today at Washington and Lee and at a few other schools that continue to maintain absolutist "honor systems