The most popular quotes:
Light thinks it travels faster than anything but it is wrong. No matter how fast light travels it finds the darkness has always got there first, and is waiting for it.
You don`t really understand human nature unless you know why a child on a merry-go-round will wave at his parents every time around and why his parents always wave back.
There are in fact two things, science and opinion; the former begets knowledge, the latter ignorance.
The point about zero is that we do not need to use it in the operation of daily life. No one goes out to buy zero fish.
Someone told me that each equation I included in the book would halve the sales.
Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.