最优货币区是指能够以最小的实际经济干扰来稳定就业和价格的区域。
世界充满了神奇的东西,它们在耐心地等待我们变得更有智慧。
物理学的美在于它能够用简单而优雅的理论解释复杂的事物。
No matter what happens in life, be good to people. Being good to people is a wonderful legacy to leave behind.