As Secretary of State Rex Tillerson said goodbye on Thursday, he urged State Department employees to stay honest and be kind to one another, despite their “mean-spirited town.” After imploring his staff to continue doing their duties, Tillerson issued a warning: “Never lose sight of your most valuable asset, the most valuable asset you possess: your personal integrity,” he said in his farewell speech. The short talk reflected Tillerson’s tumultuous time in office.