数学证明是用逻辑语言写成的诗。
A mathematical proof is a poem written in the language of logic.
领导力在于做出艰难的决定并坚持它们,即使这些决定不受欢迎。
Quality should never be compromised for quantity.
自分を信じることが、一番の力になる。
The more honest you are, the more open, the less fear you will have.
The key to sustainable development is to balance economic growth and environmental protection.