The theory of economic development is the study of how the economic system generates the forces which incessantly transform it.
"I am not young enough to know everything."
Be still. Apart from this the mind has no task to do or thought to think.
"When we love, we always strive to become better than we are. When we strive to become better than we are, everything around us becomes better too."
多样性不仅仅是要达成的指标,更是可以发挥的优势。