Quality is never an accident; it's always the result of intelligent effort.
质量从来不是偶然的;它始终是智慧努力的结果。
当且仅当所有投资者都持有均值-方差有效的投资组合时,市场组合才是有效的。
现代采石必须将地质学的智慧与工程的创新相结合。
生命本身就是最美的童话。
The world is full of people who have stopped listening to themselves or have listened only to their neighbors to learn what they ought to do, how they ought to behave, and what the values are that they should be living by.
It is so hard to believe because it is so hard to obey.