La literatura es el espejo del alma humana.

I would like to fly in space.Absolutely.That would be cool.I used to just do personally risky things， but now I’ve got kids and responsibilities， so I can’t be my own test pilot.That wouldn’t be a good idea.But I definitely want to fly as soon as it’s a sensible thing to do.

科学中最激动人心的短语，预示着新发现的不是“我找到了！”而是“这有点奇怪……”

预见数学未来的真正方法是研究它的历史和现状。