I've always been fascinated by the idea of transformation, both physically and emotionally.

Quality is never an accident; it is always the result of intelligent effort.

"In a world of scarcity, the most valuable resource is not oil or gold, but imagination."

数学是一门活生生的学科，随着新的思想和发现不断演变。

Quality should never be compromised, not even in the face of rising costs.