“For every theory there has to be counterevidence--otherwise science wouldn't progress.”

“A theory is a battlefield in your head.”

“Every art and every inquiry, and similarly every action and pursuit, is thought to aim at some good; and for this reason the good has rightly been declared to be that at which all things aim.”

“Why do people have to build such depressing places? I'm not saying that every nook and cranny of the world has to be beautiful, but does it have to be this ugly?”

“Narrow minds devoid of imagination. Intolerance, theories cut off from reality, empty terminology, usurped ideals, inflexible systems. Those are the things that really frighten me. What I absolutely fear and loathe.”

“I sometimes think that people’s hearts are like deep wells. Nobody knows what’s at the bottom. All you can do is imagine by what comes floating to the surface every once in a while.Its only confusing if you believe it has to make sense.”

“Math is like water. It has a lot of difficult theories, of course, but its basic logic is very simple. Just as water flows from high to low over the shortest possible distance, figures can only flow in one direction. You just have to keep your eye on them for the route to reveal itself. That’s all it takes. You don’t have to do a thing. Just concentrate your attention and keep your eyes open, and the figures make everything clear to you. In this whole, wide world, the only thing that treats me so kindly is math.”