For every dollar you spend purchasing something substantial， expect to pay a dollar in repairs， maintenance， or disposal by the end of its life.
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 best books leave you with more questions than answers."
在电影制作中，耐心不仅是一种美德，更是一种必需。
The most important thing in mathematics is to have a good intuition.