【解释】人常常在忧患困苦中，才能磨练意志，增长才干。

真相很少是纯粹的，也从不简单。

"The most beautiful people we have known are those who have known defeat, known suffering, known struggle, known loss, and have found their way out of the depths."

数学家研究纯数学不是因为它有用；他研究它是因为他喜欢它，他喜欢它是因为它美丽。

绘画就是用色彩祈祷。