Valentine: There wasn't enough time before. There weren't enough pencils! (He flourishes Thomasina's lesson book.) This took her I don't know how many days and she hasn't scratched the paintwork. Now she'd only have to press a button, the same button over and over. Iteration. A few minutes. And what I've done in a couple of months, with only a pencil the calculations would take me the rest of my life to do again – thousands of pages – tens of thousands! And so boring! (1.4)
Hannah: And then he didn't sail until the beginning of July!
Bernard: Everything moved more slowly then. Time was different. He was two weeks in Falmouth waiting for wind or something – (2.5)
Valentine: A film of a pendulum, or a ball falling through the air – backwards, it looks the same. [...] But with heat – friction – a ball breaking a window -- [...] It won't work backwards. [...] She saw why. You can put back the bits of glass but you can't collect up the heat of the smash. It's gone. (2.7)