Costs do not exist to be calculated. Costs exist to be reduced.
成本不是为了计算而存在的，而是为了被降低而存在的。
"The art of writing is the art of discovering what you believe."
Short-term gains should never compromise long-term sustainability.
不存在所谓的质量问题。只有人们没有做他们应该做的事情的问题。