The obligation of subjects to the sovereign is understood to last as long, and no longer, than the power lasteth by which he is able to protect them.

The public have an insatiable curiosity to know everything, except what is worth knowing.

教学的艺术是帮助发现的艺术。

煤炭行业不仅仅是挖掘岩石；它是为生活提供动力并推动进步。