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.

She was a keen observer, a precise user of language, sharp-tongued and funny. She could stir your emotions. Yes, really, that's what she was so good at - stirring people's emotions, moving you. And she knew she had this power...I only realized later. At the time, I had no idea what she was doing to me.

Even if we could turn back, we'd probably never end up where we started.

Adults constantly raise the bar on smart children, precisely because they're able to handle it. The children get overwhelmed by the tasks in front of them and gradually lose the sort of openness and sense of accomplishment they innately have. When they're treated like that, children start to crawl inside a shell and keep everything inside. It takes a lot of time and effort to get them to open up again. Kids' hearts are malleable, but once they gel it's hard to get them back the way they were.

It's a terrible thing when a person dies, whatever the circumstances. A hole opens up in the world, and we need to pay the proper respects. If we don't, the hole will never be filled in again.

You have to make an effort to always look at the good side, always think about the good things. Then you've got nothing to be afraid of. If something bad comes up, you do more thinking at that point.

Some things in life are too complicated to explain in any language.