我相信毅力的力量。
英雄是懂得责任与自由同在的人。
The circumstances of the world are continually changing, and the opinions of man change also; and as government is for the living, and not for the dead, it is the living only that has any right in it.
The hardest person to forgive is always yourself.
The most important single central fact about a free market is that no exchange takes place unless both parties benefit.
The division of labor is limited by the extent of the market.