Only two things are infinite, the universe and human stupidity, and I’m not sure about the former. (Albert Einstein)

Never interrupt your enemy when he is making a mistake. (Napoleon Bonaparte)

Give me chastity and continence, but not yet. (Saint Augustine)

Dancing is silent poetry. (Simonides)

It’s kind of fun to do the impossible. (Walt Disney)

Each problem that I solved became a rule which served afterwards to solve other problems. (Rene Descartes, Discours de la Methode)

Do, or do not.There is no ‘try’. (Yoda)

When one person suffers from a delusion it is called insanity; when many people suffer from a delusion it is called religion. (Robert Pirsig)

I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use. (Galileo Galilei)

If a man does his best, what else is there? (General George S. Patton)

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