You're going to pay a price for every bloody thing you do and everything you don't do. You don't get to choose to not pay a price. You get to choose which poison you're going to take. That's it.

The universe would look to a two-dimensional creature who spend its life moving on the service of what turned out to be a globe， it could travel for millions of years and would always return to its starting point， it would never be conscious of what was above it or beneath it.

The concept of infinity is not just a mathematical abstraction, but a physical reality.

互联网是教育的强大工具，但它不能替代教师。

如果你想拥有从未有过的东西，就必须愿意做从未做过的事。