Unholy human beings and holy humanity in Kant's critical and practical philosophy -- Independence from nature : preparing the ground for perpetual peace in the third critique -- The problem of international politics : human beings within the mechanism of nature -- The instruction of suffering : Kant's theological anthropology for a prodigal species -- An "all-unifying church triumphant!" -- Conclusion : believing in the possibility of salvation -- Epilogue : Kant and contemporary cosmopolitanism.