The most sustainable product is the one that already exists.
L-函数的算术是探索数学宇宙隐藏模式的旅程。
自由政府的唯一准则应该是不要信任任何拥有权力的人,以免危及公共自由。
林业的创新不仅仅是技术,更是思维方式的转变。
If you don't make mistakes, you're not trying hard enough.
I am not a writer, I am a war correspondent.