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

Don’t stay in bed, unless you can make money in bed. (George Burns)

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

Black holes are where God divided by zero. (Steven Wright)

I shall not waste my days in trying to prolong them. (Ian L. Fleming)

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

If you can’t get rid of the skeleton in your closet, you’d best teach it to dance. (George Bernard Shaw)

Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity. (Martin Luther King Jr.)

If you are going through hell, keep going. (Sir Winston Churchill)

Victory goes to the player who makes the next-to-last mistake. (Chessmaster Savielly Grigorievitch Tartakower)

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