What dramatic purposes are served by Edmund's soliloquy thou nature art your goodness?

In "King Lear," Edmund's soliloquy serves to reveal his villainous nature and his belief in the power of self-determination over fate. It sets the tone for his manipulative behavior throughout the play and highlights his ambition and cunning nature. The soliloquy also demonstrates Edmund's willingness to betray his family in pursuit of power and status.