“If one is to drown, one may as well do it in the largest possible pond.”

“It may be that I lead the life I've planned for myself it may affect others; the effect may be no greater than the ripple caused by a stone thrown in a pond, but one ripple causes another and that one a third; it's just possible that a few people will see that my way of life offers happiness and peace, and that they in their turn will teach what they have learned to others.”

“Amy Pond: 'I thought... well, I started to think you were just a madman with a box.'The Doctor: 'Amy Pond, there's something you better understand about me, 'cause it's important and one day your life may depend on it. [He Smiles] I am definitely a madman with a box.”

“Well may you do this to one who can endure it.”

“What makes my life my own is ultimately the sheer fact that it is mine to live, mine to make something of, in the face of my possible non-existence. Every other possibility is something that I may be free not to do, and that someone else may be able to do just as well as I can. But my death is a possibility that necessarily faces me alone: no one can face it for me.”

“If one synchronized swimmer drowns, do all the rest have to drown too? ”