The saddest thing about love is that not only that it cannot last forever, but that heartbreak is soon forgotten.
The history of mathematics is a history of human curiosity and ingenuity.
能源的未来在于多样化,没有任何单一来源能满足我们所有的需求。
仅靠教育不足以让人们摆脱贫困;我们需要解决更广泛的系统问题。
Every reader brings something different to a story.