心理学必须是一门实用的科学，关注心理运作的方式和原因。
Psychology must be a practical science, concerned with the how and why of mental operations.
合作是应对全球能源挑战的关键。
"Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers."
如果没有规和矩，就无法制作出方形和圆形的物品，后来引申为行为举止的标准和规则。这句贤文旨在教育人们，做人要遵纪守法。