Maybe the ghosts are like, ghosts of your past, like painful memories that you lock inside yourself? Hence, 'a soul in pain', and 'ghosts we kept within'. When you come to terms with these 'ghosts' and break free of them ('break free from inside'/'set free'), you become enlightened about your true self ('untie our blindfolded eyes'/'all will be revealed') and can finally begin to live with grace, to deal with the pain that haunts you with grace & dignity ('So when the ghosts find you, be careful but be graceful'). The 'Build bridges and not roads/Make love make hate not war' stanza probably just refers to future relationships, or a new way to live your life now that 'all [is] revealed'.
Maybe the ghosts are like, ghosts of your past, like painful memories that you lock inside yourself? Hence, 'a soul in pain', and 'ghosts we kept within'. When you come to terms with these 'ghosts' and break free of them ('break free from inside'/'set free'), you become enlightened about your true self ('untie our blindfolded eyes'/'all will be revealed') and can finally begin to live with grace, to deal with the pain that haunts you with grace & dignity ('So when the ghosts find you, be careful but be graceful'). The 'Build bridges and not roads/Make love make hate not war' stanza probably just refers to future relationships, or a new way to live your life now that 'all [is] revealed'.
Or something like that, it's pretty vague.