数学家最好的作品是艺术，一种高度完美的艺术，像想象的最秘密的梦想一样大胆，清晰而透明。
The mathematician's best work is art, a high perfect art, as daring as the most secret dreams of imagination, clear and limpid.
最可怕的时刻永远是你开始之前。
The universe is a vast and mysterious place, and we are only beginning to understand its complexities.
The leather industry has a rich history, but its future depends on innovation and ethical practices.
皮革行业有着丰富的历史，但其未来取决于创新和道德实践。