The story goes two friends are walking through the desert. During some point of the journey they have argument, and one friend beats the other one in the face.
The one is hurt, but saying anything, he writes in the sand: "Today my best friend beats me in the face."
They keep on walking they find an oasis (绿洲) and they decide to take a bath. The one who (beat) gets stuck in the mire (泥潭) and starts to sink, but (fortune) the friend saves him.
After he recovers from the near (drown), he writes on a stone: "Today my best friend saves my life."
His friend asks him, "When I hurt you, you wrote in the sand, but now you write on a stone. Why?"
He (reply): "When someone hurts us, we should write it down in the sand, the winds of (forgive) can rub it away. But when someone does something good to us, we must carve on a stone, therefore, no wind can ever erase it."
Learn to write your hurts in the sand and to engrave your benefits on the stone.
