幸福的家庭都是相似的，不幸的家庭各有各的不幸。

A thriving forest is a testament to both nature’s resilience and human stewardship.

Theorems are the permanent literature of mathematics.

The only thing that makes life possible is permanent, intolerable uncertainty; not knowing what comes next.

君子作战虽然布阵，但还是以勇敢为本。