“After nearly a year of mourning, I feel like the Victorians when Edison came along- all those years in the darkness, and then electric light. I've got the earth between my toes.”

“The Uncertainty Principle states that you can know where a particle is, or you can know where it's going, but you can't know both at the same time. The same, it turns out, is true of people. And wh...”

“Sometimes I wonder if my heart is like a black hole--it's so dense that there's no room for light, but that doesn't mean it can't still suck me in.”

“The message of this lecture is that black holes aint as black as they are painted. They are not the eternal prisons they were once thoughthings can get out of a black hole both on the outside and p...”

“Sure, black holes can kill us, and in a variety of interesting and gruesome ways. But, all in all, we may owe our very existence to them.”

“Tears shed for another person are not a sign of weakness. They are a sign of a pure heart.”

“Without you in my arms, I feel an emptiness in my soul. I find myself searching the crowds for your face - I know it's an impossibility, but I cannot help myself.”

“So its true, when all is said and done, grief is the price we pay for love.”

“Some infinities are bigger than other infinities.”

“I love you in order to begin loving you,to start infinity againand never to stop loving you:that is why I do not love you yet.”

“If you fell outward to the limit of the universe, would you find a board fence and signs reading DEAD END? No. You might find something hard and rounded, as the chick must see the egg from the insi...”