永远不要把一次失败和最终的失败混为一谈。
Never confuse a single defeat with a final defeat.
I'm interested in the weak materials, the materials that people don't think can be used for permanent structures.
We are not afraid to take risks, but we do so intelligently.
世界不是一个需要解决的问题；它是我们所属的一个生命体。