Sand and Stone Ikhwan and Arif were walking through the desert. During some point of the journey, they had an argument and Ikhwan slapped Arif in the face. Arif was hurt, but he said nothing and wrote in the sand : " TODAY MY BEST FRIEND SLAPPED ME IN THE FACE." They kept on walking and finally found an oasis. They decide to take a bath. Suddenly, Arif slipped on moss, hit his head and started drowning, but Ikhwan saved him. After Arif gained his consciousness, he carved on a stone : " TODAY MY BEST FRIEND SAVED MY LIFE". Ikhwan asked Arif, "After I hurt you, you wrote in the sand and now, you carved it on a stone, why ?" Arif replied, "when someone hurt us, we should write it down in sand where winds forgiveness would blow it away and when someone does something good for us, we must engrave it in stone where no wind can ever erase it.   What is the main idea of the second paragraph ?