悲观主义者的决定性特征是，他们倾向于相信坏事会持续很长时间，会破坏他们所做的一切，并且是他们自己的错。
The defining characteristic of pessimists is that they tend to believe bad events will last a long time, will undermine everything they do, and are their own fault.
政策应基于证据，而非意识形态。
The architect must be a fighter for social justice.
In the world of mathematics, every question leads to another, creating an endless web of knowledge that connects all areas of science.