要享受自由，我们必须控制自己。

The most sustainable product is the one that already exists.

我是核心。我是宇宙的中心。

To solve a mathematical problem is to uncover a piece of the universal puzzle.

幸福不是现成的东西，它来自于你自己的行动。

I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

追求知识不仅是心灵的旅程，也是心灵的旅程。