你无法回到过去改变开头，但你可以从现在开始改变结局。
You can’t go back and change the beginning, but you can start where you are and change the ending.
Life never exists on its own, but accompanied by loneliness. Whether we are born, we grow up, we fall in love or we succeed and fail, until the end, loneliness exists in a corner of life like a shadow.
科学要求一个人付出他的一生。