Lyric discussion by christchin910 

Cover art for A Stone lyrics by Okkervil River

It's worth noting that Friedrich Nietzsche has a philosophical concept called "The Heaviest Weight". Just saying since that is a lyric in the song. But basically the heaviest weight is if in the darkest moment of your loneliness, a demon approaches you and says after death you will relive your life ad infinitum. If one would be content with that, then that means they have been living authentically, or true to themself, because in that situation, there is no outside influence causing you to act in bad faith.