The best-quote-so-far prize goes to Moonbird: A Year on the Wind with the Great Survivor B965, by Phillip Hoose. This is a children's/YA nonfiction book about an incredible migratory species and one amazing little bird, and the quote comes from p. 25.
"This bird has to be among the toughest four ounces of life in the world."
Inspiring. And it's well-written science for kids. The book won several awards last year, so it has seen greater accolades, but I'm delighted to share this little gem of a quote. And it's worth reading!