调试程序的最好方法是让它工作。
在数学中,提出问题的艺术必须比解决问题更有价值。
The truth is, every writer creates his own precursors.
估计问题的性质不同。在这里,我们不关心检验特定的假设,而是关心估计参数的值。
The theme of a film should emerge from the film itself, not be imposed upon it.