Sometimes I believe in God, sometimes I don't. I think it's 50-50 maybe. But ever since I've had cancer, I've been thinking about it more. And I find myself believing a bit more. I kind of – maybe it's 'cause I want to believe in an afterlife. That when you die, it doesn't just all disappear. The wisdom you've accumulated. Somehow it lives on, but sometimes I think it's just like an on-off switch. Click and you're gone. And that's why I don't like putting on-off switches on Apple devices.

Quoted by his biographer, Walter Isaacson