Alexei Navalny, the Russian opposition leader, spent his final months in prison with remarkable resilience, ambition, and isolation. Despite harsh conditions, he remained undeterred in pursuing knowledge and political activism. What Happened: The New York Times on Monday reported that Navalny, who died in prison under mysterious circumstances, spent his last months in solitary confinement, his body suffering from lack of medical and dental care. Despite these conditions, Navalny’s letters to friends and associates reveal a man who remained resolute in his political convictions and ambitions. H…