The theme of this investigation is Tragedy, philosophy and politics in Aeschylus. Although the literary analysis is mainly focused on the tragedy Prometheus unbound, the theoretical framework related to philosophy and politics in Aeschylus is valid to understand other tragedies. The guiding line of this thesis is discovering and documenting a polemos in Greek culture, particularly evident in the thought of the Pre-Socratics, and even more clearly in Athenian politics from Solon, through Peisistratos, Cimon, Cleistenes and Ephialtes, until Pericles, with whom polemos is solved into dike.