"The act of writing is an act of courage."
股市中充满了知道一切价格却不知道任何价值的人。
用黄金打造的船不能在波涛汹涌的江面上航行,用玉雕琢的马不能驰骋在千里路途上。
在数学中,提出问题的艺术必须比解决问题更有价值。
The world owes all its onward impulses to men ill at ease. The happy man inevitably confines himself within ancient limits.