"Life is a comedy to those who think, a tragedy to those who feel."

"My father had taught me to be nice first, because you can always be mean later, but once you've been mean to someone, they won't believe the nice anymore. So be nice, be nice, until it's time to stop being nice, then destroy them."

"Don't ask for guarantees. And don't look to be saved in any one thing, person, machine, or library. Do your own bit of saving, and if you drown, at least die knowing you were heading for shore."

"Your time is limited, so don't waste it living someone else's life."

"I know it seems hard sometimes but remember one thing. Through every dark night, there's a bright day after that. So no matter how hard it get, stick your chest out, keep ya head up.... and handle it."

"But when it came right down to it, the skin of my wrist looked so white and defensless that I couldn't do it. It was as if what I wanted to kill wasn't in that skin or the thin blue pulse that jumped under my thumb, but somewhere else, deeper, more secret, and a whole lot harder to get."

"Oh the places you'll go! There is fun to be done! There are points to be scored. There are games to be won. And the magical things you can do with that ball will make you the winning-est winner of all."

"When you can live forever what do you live for?"

"I'm the most terrific liar you ever saw in your life. It's awful. If I'm on my way to the store to buy a magazine, even, and somebody asks me where I'm going, I'm liable to say I'm going to the opera. It's terrible."

"You must learn to let go. Release the stress. You were never in control anyway."

"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. Everybody knows that everybody dies. But not every day. Not today. Some days are special. Some days are so, so blessed. Some days, nobody dies at all. (In the library, the Doctor walks back to the TARDIS. He stops, looking at the doors. Then he raises his hand, and stands there poised like that for a long moment. Finally he snaps his fingers. The doors open. He smiles slowly and walks in, joining Donna. Then he snaps his fingers again, and the doors close. River's voice continues over this.) Now and then, every once in a very long while, every day in a million days, when the wind stands fair, and the Doctor comes to call... everybody lives."

"To be creative means to be in love with life. You can be creative only if you love life enough that you want to enhance its beauty, you want to bring a little more music to it, a little more poetry to it, a little more dance to it."

"I can't decide whether I'm a good girl wrapped up in a bad girl, or if I'm a bad girl wrapped up in a good girl. And that's how I know I'm a woman!"

"If you have a strong purpose in life, you don't have to be pushed. Your passion will drive you there."

"We'd start slow, the way we always did, because the run, and the game, could go on for awhile. Maybe even forever.That was the thing. You just never knew. Forever was so many different things. It was always changing, it was what everything was really all about. It was twenty minutes, or a hundred years, or just this instant, or any instant I wished would last and last. But there was only one truth about forever that really mattered, and that was this: it was happening. Right then, as I ran with Wes into that bright sun, and every moment afterwards. Look, there. Now. Now. Now."

"He was mastered by the sheer surging of life, the tidal wave of being, the perfect joy of each separate muscle, joint, and sinew in that it was everything that was not death, that it was aglow and rampant, expressing itself in movement, flying exultantly under the stars."

"Often, it’s not about becoming a new person, but becoming the person you were meant to be, and already are, but don’t know how to be."

"Do not take life too seriously. You will never get out of it alive."

"Make a pact with yourself today to not be defined by your past. Sometimes the greatest thing to come out of all your hard work isn't what you get for it, but what you become for it. Shake things up today! Be You...Be Free...Share."

"My one regret in life is that I am not someone else."

"I can see how it might be possible for a man to look down upon the earth and be an atheist, but I cannot conceive how a man could look up into the heavens and say there is no God."

"I walked over to the hill where we used to go and sled. There were a lot of little kids there. I watched them flying. Doing jumps and having races. And I thought that all those little kids are going to grow up someday. And all of those little kids are going to do the things that we do. And they will all kiss someone someday. But for now, sledding is enough. I think it would be great if sledding were always enough, but it isn't."