If you're not failing occasionally, you're not pushing hard enough.
【大意】等到大寒节气到来时，冰霜寒雪从天而降，然后才能知道只有松柏能经得住严寒考验，依然繁茂。
实现明天的唯一限制将是我们今天的疑虑。
The progress of mathematics is measured by the number of problems it can solve.
"The best stories are the ones that surprise the writer as much as the reader."