DOCTOR: Love, in all its forms, is the most powerful weapon we have. Because love is a form of hope. And like hope, love abides. In the face of everything.

DOCTOR: If something happens to Umbreen, your whole timeline could be erased. No Yaz! We can't have a universe with no Yaz!

THIJARIANS: His time is soon.

DOCTOR: How soon? Give him a day. Just give him this day, please.

THIJARIANS: We are not gods. Events sit as they will. We only witness. The fixed force of Time cannot be stopped.