有时候你必须接受，有些人注定不会永远留在你的生活中。
译文：青春容易逝去，学问却很难获得成功，所以每一寸光阴都不能轻易放过。赏析：生命短暂，学问却无穷尽，我们要在有限的生命里去追求高深的学问。不要待到岁月逝去时，才后悔莫及。
The pursuit of science is not a luxury but a necessity for the survival of mankind.
To be under occupation is to be reminded of death at every moment.
The study of mathematics is like air or water to the development of science.