D.

“No matter how long you train someone to be brave, you never know if they are or not until something real happens.”
― Veronica Roth, Insurgent

“The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.”
― Albert Camus

“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

“Scared is what you're feeling. Brave is what you're doing.”
― Emma Donoghue, Room