质量不是职位；它是一种实践。
The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.
一个国家真正的财富在于它的自然资本。
The future belongs to those who believe in the beauty of their dreams.
No president who performs his duties faithfully and conscientiously can have any leisure.
