When I read these books, I no longer felt like I was confined to a very tiny world. I no longer felt housebound and bedbound. Really, I told myself, I was just brainbound. And this was not such a sorry state of affairs. My brain, with a little help from other people's brains, could take me to some pretty interesting places, and create all kinds of wonderful things. Despite its faults, my brain, I decided, was not the worst place in the world to be.

When I read these books, I no longer felt like I was confined to a very tiny world. I no longer felt housebound and bedbound. Really, I told myself, I was just brainbound. And this was not such a sorry state of affairs. My brain, with a little help from other people's brains, could take me to some pretty interesting places, and create all kinds of wonderful things. Despite its faults, my brain, I decided, was not the worst place in the world to be.

Fear distorts the world. Fear sees demons where only shadows dwell.

Even very low-probability events can, and indeed do, occur.

In the long history of human affairs, common sense doesn’t have the greatest track record.

I knew how many zeroes there were in a quintillion, but I thought that algebra lived in ponds.

The most important thing I learned [...] was that when a person dies he only appears to die. He is still very much alive in the past, so it is very silly for people to cry at his funeral. All moments, past, present and future, always have existed, always will exist.