我们必须自由，不是因为我们主张自由，而是因为我们实践自由。
We must be free not because we claim freedom, but because we practice it.
The consequences of an act affect the probability of its occurring again.
数学的语言是普遍的，超越了文化和语言的障碍。
You can’t put a limit on anything. The more you dream, the farther you get.
Sustainability is not just about technology, it's about creating a whole new ecosystem.
最具可持续性的矿山是那些超越开采思维的矿山。
经验是一所好学校，但学费很高。