The fundamental cause of trouble in the world is that the stupid are cocksure while the intelligent are full of doubt. (Bertrand Russell)

If you can count your money, you don’t have a billion dollars. (J. Paul Getty)

A mathematician is a device for turning coffee into theorems. (Paul Erdos)

Human history becomes more and more a race between education and catastrophe. (H. G. Wells)

I don’t know why we are here, but I’m pretty sure that it is not in order to enjoy ourselves. (Ludwig Wittgenstein)