墙是最古老也是最革命的建筑元素。
The wall is the oldest and most revolutionary architectural element.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
The business of education is not to make the young perfect in any one of the sciences, but so to open and dispose their minds as may make them capable of any, when they shall apply themselves to it.
过日子就像是上帝在写小说，就让他放开手去写吧。
Be realistic, demand the impossible!