Give up or give in?

I guess tomorrow's press headlines will all be the same breaking news: Liu Xiang quit his game in Beijing because of injury. Already, Mitbbs's flooded with posts about his quit. I saw that moment on TV. Obviously he looked painful with his ankle. He bolted out with the false start of some other player, and he limped slowly back. He then made a perhaps his hardest decision in life. It might be a smart choice because of too much pressure on his shoulder after his amazing performance at Athens Games. Four years' hard work now ended in vain. Really sad. But I can feel he might give up this game, but he will not give in as he is still young, and he still has much potential in the future. Go, Liu Xiang!