It is a first principle of human action that a man does what he believes will satisfy his desires.
人类行为的首要原则是，一个人会做他认为能满足自己欲望的事情。
任何公司最有价值的资产都是它的员工。
"I guess that’s just part of loving people: You have to give things up. Sometimes you even have to give them up."
要理解知觉，研究其在适应中的作用。
解释：咸味食物走血分，血病的人不宜多食，说明饮食需根据病症调整。