Quality is never an accident; it is always the result of intelligent effort.
质量从来不是偶然的；它始终是智慧努力的结果。
最甜美的果实往往来自最艰难的时节。
The computing scientist's main challenge is not to get confused by the complexities of his own making.
如果上帝要让人人都一样的话，他会给每人一双脚撑。