世界上最好和最美丽的东西是看不见甚至摸不到的——它们必须用心去感受。
The value of a commodity, or the quantity of any other commodity for which it will exchange, depends on the relative quantity of labor which is necessary for its production, and not on the greater or less compensation which is paid for that labor.
如果你不相信自己，别人也不会相信你。
What you get by achieving your goals is not as important as what you become by achieving your goals. At your funeral people will not recall what you did； they will only remember how you made them feel.
