Aim high, think big, act generously, and dream greatly. The amount of development you want, the value and achievements you hope to attain, depend on how great your aspirations and ideals are. Similarly, for a piece of iron, if it is cast into a horseshoe, it's only worth 10 yuan; if made into a magnet, it's worth 3,000 yuan; if crafted into a watch spring, it's worth 3 million yuan. So it is with people.