«Now this is the subject that everyone finds the hardest. But you're gonna have to pass it if you want to earn your TARDIS. Nobody's graduating from this Academy Until you've all mastered Gallifreyan History!Now this is the subject that everyone finds the hardest. But you're gonna have to pass it if you want to earn your TARDIS. Nobody's graduating from this Academy Until you've all mastered Gallifreyan History!