我们这个时代的挑战是创造一个可持续的能源未来。
The challenge of our time is to create a sustainable energy future.
The absence is more important than the presence.
"I write for kids because I was a kid who needed books."
创新不是对每件事都说“是”，而是对所有非关键特性说“不”。
解释：不注意天时，财富就不能增长；不注意地利，粮食就不会充足。