可持续性不是一种趋势,而是我们共同的责任。
Probability theory is nothing but common sense reduced to calculation.
The most powerful tools are those that empower others.
任何一代人最伟大的发现是,一个人可以通过改变态度来改变他的生活。
Sustainability is not an option; it's a responsibility we owe to future generations.