“We're all in the dark. We try to find out, but can you imagine anything more ludicrous than one person's opinion of another person? One goes along thinking one knows; but one really doesn't know”

“I know it's a rare privilege, but if one can really tackle something in adult life that means that much to you, then it's more rewarding than anything I can imagine.”

“An ignorant person is one who doesn't know what you have just found out.”

“Dark matter is what my research team is looking for. No one knows what it is. There's more stuff out there in the universe than we can see, that's the point. We can see the stars and the galaxies and the things that shine, but for it all to hang together and not fly apart, there needs to be a lot more of it — to make gravity work, you see. But no one can detect it. So there are lots of different research projects trying to find out what it is, and this is one of them. … We think it's some kind of elementary particle. Something quite different from anything discovered so far. But the particles are very hard to detect.”

“One of the cruelest things you can do to another person is pretend you care about them more than you really do.”

“The person we know at first, she thinks, is not the one we know at last.”

“If all mankind minus one, were of one opinion, and only one person were of the contrary opinion, mankind would be no more justified in silencing that one person, than he, if he had the power, would be justified in silencing mankind.”

“You want to know if the heart of a man or a woman can contain enough love for more than one person? … I think it's perfectly possible as long as one of those people doesn’t turn into … a Zahir.”

“All I know is the dark, the night underground. And that’s all there really is. That’s all there is to know, in the end. The silence, and the dark. You know everything, wizard. But I know one thing — the one true thing!”

“There are three persons living in each of us: the one we think we are, the one other people think we are, and the one God knows we are.”