Some day you'll sit on the throne and the truth will be what you make it.

The line expresses a hard-edged, political view of “truth” as something shaped by power rather than discovered as an objective fact. It suggests that once someone holds ultimate authority (“the throne”), they can define official reality—through law, propaganda, patronage, and the ability to reward allies and punish dissent. In Martin’s fictional worlds, legitimacy often depends less on moral right than on who can enforce a narrative, so the quote underscores a recurring theme: history and public belief are malleable, and rulers can manufacture consensus. It also carries a warning: aspiring leaders may be tempted to replace honesty with expedient storytelling once they have the means to do so.