心理学理论的检验标准是其对生活的适用性。
The test of a psychological theory is its applicability to life.
The only way to learn mathematics is to do mathematics.
The photograph is the most perfect picture.
【释义】人穷的时候不能丧失道德的标准，而发达的时候也不能背弃自己做人的原则。
The food industry has a duty to nourish both people and the planet.
数学的本质不是使简单的事情复杂化，而是使复杂的事情简单化。
我们必须平衡短期绩效与长期价值创造。
成功是一种心态。