没有充足的食物供应，今天所知道的文明就不可能进化，也不可能生存。
Civilization as it is known today could not have evolved, nor can it survive, without an adequate food supply.
Safety is not just a priority, it's a core value. Every employee should go home safely every day.
The best teacher in life is experience.
你的时间有限，所以不要浪费时间去过别人的生活。
数学的美在于它揭示隐藏的对称性和真理的能力。