【释义】快乐不在于外在环境，而在于自己的内心。

These walls are really interesting. At first you hate it, then you get used to it. After a considerable period of time, you will depend on it.

If you're not failing every now and then, you're not doing anything very innovative.

你有没有为将来打算过呢？

最优雅的证明是那些清晰地揭示问题本质的证明。

能源领域的领导力意味着有勇气在市场提出需求之前就投资于解决方案。