Doctor: the word for healer and wise man throughout the universe. We get that word from you, you know. But if you carry on the way you are, what might that word come to mean? To the people of the Gamma Forests, the word “doctor” means “mighty warrior”. How far you’ve come.
tjevo9-iamthedoctor:

John Barrowman and Alex Kingston in ‘Innuendos in Space’
Artwork by Sbs’ Things.
doctorwho:

“When you run with the Doctor, it feels like it’ll never end. But however hard you try you can’t run forever. Everybody knows that everybody dies and nobody knows it like the Doctor. But I do think that all the skies of all the worlds might just turn dark if he ever for one moment, accepts it.”
- River Song in Series 4: The Forest of the Dead