“And it means that sometimes thing are so complicated that it is impossible to predict what they are going to do next, but they are only obeying really simple rules.”

“The rule for working out prime numbers is very simple, but no one has ever worked out a simple formula for telling you whether a very big number is a prime number or what the next one will be. […] Prime numbers is what is left when you have taken all the patterns away. I think prime numbers are like life. They are very logical but you could never work out the rules, even if you spent all your time thinking about them.”

“Sometimes we get sad about things and we don't like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don't know why we are sad, so we say we aren't sad but we really are.”

“Siobhan also says that if you close your mouth and breathe out loudly through your nose it can mean that you are relaxed, or that you are bored, or that you are angry and it all depends on how much air comes out of your nose and how fast and what shape your mouth is when you do it and how you are sitting and what you just said before and hundreds of other things which are too complicated to work out in a few seconds.”

“Mrs. Forbes said that hating yellow and brown is just being silly. And Siobhan said that she shouldn't say things like that and everyone has favorite colors. And Siobhan was right. But Mrs. Forbes was a bit right, too. Because it is sort of being silly. But in life you have to take lots of decisions and if you don't take decisions you would never do anything because you would spend all your time choosing between things you could do. So it is good to have a reason why you hate some things and you like others. It is like being in a restaurant like when Father takes me out to a Berni Inn sometimes and you look at the menu and you have to choose what you are going to have. But you don't know if you are going to like something because you haven't tasted it yet, so you have favorite foods and you choose these, and you have foods you dno't like and you don't choose these, and then it is simple.”

“Siobhan says that if you raise one eyebrow it can means lots of different things. It can mean 'I want to do sex with you' and it can also mean 'I think what you just said was very stupid.”

“...I wanted to go to sleep so that I wouldn't have to think because the only thing I could think was how much it hurt because there was no room for anything else in my head, but I couldn't go to sleep and I just had to sit there and there was nothing to do except to wait and to hurt.”