Doctor Who

"Never trust a time traveler who tells you everything's going to be fine."

"The past doesn't define us. Our choices do."

"I've lived too long in other people's stories. Now I want to live in my own."

"You always were a romantic at heart."

"The way I see it, every life is a pile of good things and bad things. The good things don't always soften the bad things, but vice versa, the bad things don't always spoil the good things."

"Time is a river, darling. And we're all swimming in it."

"I'm not running away from the Universe. I'm running toward it."

"Spoilers!"

"I don't believe in fate. I believe in choice."

"The most precious thing in the universe is a second chance."

"I'm not cruel. But I am right."

"Time isn't a line. It's more like a ball of wibbly-wobbly, timey-wimey stuff."

"I've seen civilizations rise and fall. The ones that survive are the ones that learn."

"The key to survival is adaptability."

"I don't need weapons. I have my mind and my TARDIS."

"The worst thing in the universe isn't evil. It's apathy."

"I've learned that happiness is fleeting, but that makes it precious."

"Imagination and courage can change the world."

"I'm running toward my destiny, not away from it."

"The best way to understand someone is to listen to them."

"I've never met a species that couldn't surprise me."

"Peace is not the absence of war. Peace is the presence of justice."

"The only way to understand the universe is to experience it."

"I'm not afraid of dying. I'm afraid of what I might become."

"The dream of humanity has always been to reach for the stars."

"I've been doing this for 900 years, and I haven't learned anything except that everyone's important."

"Leadership isn't about being in charge. It's about being responsible."

"I've come to the conclusion that people are wonderful."

"The universe is bigger on the inside."

"You'll find I'm not a creature of habit. Unless you count traveling through time and space."