The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
真正的自由是内心的自由。
Sustainability isn't a choice; it's an obligation we owe to the planet and future dairy farmers.
It is the greatest good to the greatest number of people which is the measure of right and wrong.
启蒙就是人类脱离自我招致的不成熟状态。