I'm about to do something very clever and a tiny bit against the rules of the universe. It's important that I'm properly dressed.

You should always waste time when you don't have any. Time is not the boss of you. Rule 408.

Never run when you're scared. Rule 7.

Never knowingly be serious. Rule 27.

Okay then. That's what I'll do. I'll tell you a story. Can you hear them? All these people who lived in terror of you and your judgment. All these people whose ancestors devoted themselves, sacrificed themselves to you. Can you hear them singing? Oh you like to think you're a god. But you're not a god. You're just a parasite. Eaten with jealousy and envy and longing for the lives of others. You feed on them. On the memory of love and loss and birth and death and joy and sorrow, so... so come on then. Take mine. Take my memories. But I hope you're got a big a big appetite. Because I've lived a long life. And I've seen a few things. I walked away from the last great Time War. I marked the passing of the Time Lords. I saw the birth of the universe and watched as time ran out, moment by moment, until nothing remained. No time, no space. Just me! I walked in universes where the laws of physics were devised by the mind of a madman! And I watched universes freeze and creation burn! I have seen things you wouldn't believe! I have lost things you will never understand! And I know things, secrets that must never be told, knowledge that must never be spoken! Knowledge that will make parasite gods blaze! So come on then! Take it! Take it all, baby! Have it! You have it all!

River Song: Right then. I have questions, but number one is this - what in the name of sanity have you got on your head?
The Doctor: It's a fez. I wear a fez now. Fezzes are cool.