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。

A liberdade é como o ar que respiramos; sem ela, sufocamos.

History is that certainty produced at the point where the imperfections of memory meet the inadequacies of documentation.

The important thing is not to stop questioning. Curiosity has its own reason for existing.

人最珍贵的是生命，生命最珍贵的是道。