Be realistic, demand the impossible!
数学真理是普遍而永恒的。
领导力在于通过你的存在让他人变得更好,并确保这种影响在你离开后依然持续。
模型最重要的不是其假设,而是其结论。
You must not think that what is hard for you to master is humanly impossible; and if it is humanly possible, consider it to be within your reach.