你每花一块钱购买一些实质性的东西，预计在其寿命结束时要支付一块钱的维修、保养或处理费用。
The lesson of quantum mechanics is that we must revise our classical notions of reality.
真正的建筑从约束中产生。
There is no limit on better. Talent is distributed unfairly， but there is no limit on how much we can improve what we start with.
投资土壤健康就是投资子孙后代的健康。