山的故事不是用文字写成的,而是刻在人们脸上的皱纹里。
If you think about something at three o'clock in the morning and then again at noon the next day, you get different answers...
The study of mathematics is a journey into the unknown, where each discovery opens the door to new mysteries.
The only true voyage of discovery consists not in seeking new landscapes, but in having new eyes.