“If a little kid ever asks you just why the sky is blue, you look him or her right in the eye and say, "It's because of quantum effects involving Rayleigh scattering combined with a lack of violet photon receptors in our retinae.”

“They say that even the brightest star won't shine forever. But in fact, the brightest star would live the shortest amount of time. Feel free to extract whatever life lesson you want from that.”

“I am using the word theory as a scientist means it: a set of ideas so well established by observations and physical models that it is essentially indistinguishable from fact. That is different from the colloquial use that means "guess." To a scientist, you can bet your life on a theory. Remember, gravity is "just a theory" too.”

“Science asymptotically approaches reality.”

“Coco Chanel used to talk about wearing more than one string of pearls. Why wear one if you can wear two, or something to that effect. I think that one string of pearls is just fine. But that's because my pearls are black, hers were white.”

“It should be a privilege to be able to say "I love you" to someone. It shouldn't be something people say just because they feel like it. A privilege that is earned. They say you have to earn the right to be loved; no, love is unconditional, if you love someone, they don't have to earn it. But. The right to tell someone that you love them? That has to be earned. You have to earn the right to be believed.”

“Sometimes you want to stay with someone, not only because it's magic and it's promising and it feels like home; but sometimes you find someone and you want to stay with him (or her)—because you're the same kind of animal.”