Sarah

“What an astonishing thing a book is. It's a flat object made from a tree with flexible parts on which are imprinted lots of funny dark squiggles. But one glance at it and you're inside the mind of another person, maybe somebody dead for thousands of years. Across the millennia, an author is speaking clearly and silently inside your head, directly to you. Writing is perhaps the greatest of human inventions, binding together people who never knew each other, citizens of distant epochs. Books break the shackles of time. A book is proof that humans are capable of working magic."

[Cosmos, Part 11: The Persistence of Memory (1980)]”
― Carl Sagan, Cosmos

“It is hard to talk about the importance of an imaginary hero. But heroes are important. Heroes tell us something about ourselves. History books tell us who we used to be, documentaries tell us who we are now... but heroes, tell us who we want to be. A lot of our heroes depress me. But when they made this particular hero, they didn't give him a gun, they gave him a screwdriver to fix things. They didn't give him a tank or a warship or a X-Wing Fighter, they gave him a phone box from which you can call for help. And they didn't give him a superpower, or pointy ears, or Heat Ray, they gave him an extra heart. They gave him two hearts and that is an extraordinary thing. There will never come a time when we don't need a hero like the Doctor.
- The Day of the Doctor Q&A”
― Steven Moffat