There are only 10 types of people in the world :

those who understand binary, and those who don't ...

“This planet has - or rather had - a problem, which was this: most of the people living on it were unhappy for pretty much of the time. Many solutions were suggested for this problem, but most of these were largely concerned with the movement of small green pieces of paper, which was odd because on the whole it wasn't the small green pieces of paper that were unhappy.”

Douglas Adams, The Hitchhiker's Guide to the Galaxy

“The two most important days in your life are the day you were born and the day you find out why.”

Mark Twain

“The trouble with the world is that the stupid are cocksure but the intelligent are full of doubt.”

Bertrand Russell