数学的历史是人类思想和进步的历史。
The history of mathematics is a history of human thought and progress.
Customer needs are our direction, and customer satisfaction is our goal.
The most ordinary lives are full of extraordinary moments.
Sin is a thing that writes itself across a man’s face. It cannot be concealed.
The only time success comes before work is in the dictionary.
"世界上充满了面带友好的怪物。"
