What does No man can put a chain about the ankle of his fellow man without at last finding the other end fastened about his own neck mean?

This quote suggests that oppression and injustice ultimately affect the oppressor as well as the oppressed. By trying to control or subjugate others, individuals create a cycle of bondage that can lead to their own downfall or suffering. It emphasizes the interconnectedness of humanity and the idea that true freedom can only exist when everyone is free. Ultimately, it serves as a warning against the moral and ethical consequences of tyranny.