"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
译文：贤明的人如果长辈给自己留了太多的财产，则损害他的志向而变得不思进取；愚笨的人如果长辈给其留了太多的财产，则使其更加肆无忌惮使他的错误犯得更深更多。
最好的领导者是那些多听少说的人。
煤炭仍将是能源结构的一部分，但其角色必须为更清洁的未来重新定义。
True sustainability means meeting today's needs without compromising tomorrow's possibilities.