"We are all haunted by the ghosts of our past, but it's up to us whether we let them haunt us or guide us."

词语不是透明不变的晶体；它是活的思想的外衣，会因使用环境和时代的不同而大幅改变其色彩和内容。

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

音乐有治愈、激励和团结人们的力量。