创新不是一种选择；它是煤炭行业生存的必要条件。
Innovation is not an option; it's a necessity for the survival of the coal industry.
只要人类继续无情地摧毁较低级的生命，他们永远不会知道健康和和平。因为只要人类屠杀动物，他们也会相互杀戮。
The study of intelligence must be grounded in the study of symbol systems.
The key to success in any business is understanding the market better than anyone else.
Los libros son puertas a universos paralelos que llevamos dentro.