“A Russian cosmonaut and a Russian brain surgeon were once discussing Christianity. The brain surgeon was a Christian, but the cosmonaut wasn’t. ‘I have been in outer space many times,’ bragged the cosmonaut, ‘but I have never seen any angels.’ The brain surgeon stared in amazement, but then he said, ‘And I have operated on many intelligent brains, but I have never seen a single thought.”

“A Russian astronaut and a Russian brain surgeon were once discussing religion. The brain surgeon was a Christian but the astronaut was not. The astronaut said, 'I've been out in space many times but I've never seen God or angels.' And the brain surgeon said, 'And I've operated on many clever brains but I've never seen a single thought.”

“I have gone around observing your activities from the outside. Because of this I have also been able to see things to which you have been blind... Every morning you have gone to work, but you have never been fully awake. Of course, you have seen the sun and the moon, the stars in the sky, and everything that moves, but you haven't really seen it at all. It is different for the Joker, because he was put into this world with a flaw: He sees too clearly and too much.”

“I don't belong anywhere. I am neither a heart, a diamond, a club, nor a spade. I am neither a King, a Jack, an Eight, nor an Ace. As I am here - I am merely the Joker, and who that is I have had to find out for myself.Every time I toss my head, the jingling bells remind me that I have no family. I have no number - and no trade either. I have gone around observing your activities from the outside.Because of this I have also been able to see things to which you have been blind.Every morning you have gone to work, but you have never been fully awake. It is different for the Joker, because he was put into this world with a flaw: he sees too deeply and too much.Truth is a lonely thing.”

“I'm more concerned, just as you used to be, with the world as a riddle than with the riddles in the world. I'm more concerned with natural than the supernatural. And I feel more wonder for our inscrutable brain than for all these loose anecdots about the 'extrasensory'.”

“Having a little talent as a writer is like having a little talent as a brain surgeon.”

“Imagine that one day you are out for a walk in the woods. Suddenly you see a small spaceship on the path in front of you. A tiny Martian climbs out the spaceship and stands on the ground looking up at you…What would you think? Never mind, it’s not important. But have you ever given any thought to the fact that you are a Martian yourself?It is obviously unlikely that you will ever stumble upon a creature from another planet. We do not even know that there is life on other planets. But you might stumble upon yourself one day. You might suddenly stop short and see yourself in a completely new light. On just such a walk in the woods. I am an extraordinary being, you think. I am a mysterious creature.You feel as if you are waking from an enchanted slumber. Who am I? you ask. You know that you are stumbling around on a planet in the universe. But what is the universe?If you discover yourself in this manner you will have discovered something as mysterious as the Martian we just mentioned. You will not only have seen a being from outer space. You will feel deep down that you are yourself an extraordinary being.”