Grain isn't just a commodity; it's the foundation of civilization.
心理学研究的重点不是心灵是什么,而是心灵做什么。
衡量矿业公司成功的真正标准是它能否为后代留下积极的遗产。
The best research often comes from unexpected observations.
The greatest happiness for the laborer consists in having an abundant supply of the necessaries of life.