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。
最优秀的采石场不仅提取价值,更通过再生创造价值。
The search for a theory of everything is one of the most exciting and challenging quests in modern physics.
Suspicion against every kind of authority grew out of this experience, an attitude which has never again left me.