Science

Prediction is difficult, especially the future.

Niels Bohr

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.

William D. Tammeus

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.

Terry Pratchett

Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.

Albert Einstein

Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.

Albert Einstein

There are in fact two things, science and opinion; the former begets knowledge, the latter ignorance.

Hippocrates

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.

Alfred North Whitehead

A hen is only an egg`s way of making another egg.

Samuel Butler

So what's the speed of dark?

Stephen Wright

Someone told me that each equation I included in the book would halve the sales.

Stephen Hawking