多倾听你的客户，而不是对他们说话 - 他们会告诉你你需要知道的东西。
你必须愿意为成为你想成为的人而牺牲你现在所拥有的。
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.
A mathematician is a device for turning coffee into theorems.
"Don't confuse motion with progress."
If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.