He told his son-in-law in December: "I will not say I would not serve if the good people were to be so unwise as to elect me."

VOA: special.2009.03.05

And so if you choose to elect the hacker edition of this week's problem set the challenge will be to figure out not only how to implement the game but how to implement a solver for the game.

因此，如果你选择这周的应用题目为升级版,那么你将面临的挑战,不仅是如何实现这个游戏，而且,要实现此游戏的解决方法。

哈佛公开课 - 计算机科学课程节选

It's that progress that made it possible for me to be here today, for the good people of this country to elect an African-American the 44th President of the United States of America,".

VOA: standard.2010.01.17