"The only way to do great work is to love what you do."

"People would often think I'm a faker, but I'm usually honest, in a certain way- in such a way that often nobody believes me!"

"I would rather have a world with five billion people that are happy and healthy and well-fed and full of wonderful things than a world with twenty billion people who are starving and miserable."

"You can know the name of a bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird. You'll only know about humans in different places a…"

"The game of science is to understand the world."