Optimal fiscal policy requires that tax rates be smooth over time, responding only to permanent changes in government spending.
最优财政政策要求税率随时间平稳变化,仅对政府支出的永久性变化作出反应。
The truth is rarely pure and never simple.
The voice is an instrument that everyone has.
死者总是与我们同在,我们也总是与他们同在。
自然是最伟大的智者。
I'm a perfectionist, but I've learned to let go.