I,not they, am responsible to God and man for my action and its results."

VOA: special.2010.01.28

When I am looking at that wall, its photons are hitting the wall and coming back to me.

当我盯着墙看的时候，光子撞击墙面,又回到我眼中来。

麻省理工公开课 - 固态化学导论课程节选

What am I doing? Taking its parts apart.

我在干什么，把它的各部分分开。

耶鲁公开课 - 死亡课程节选

Then he said: "No man on earth is more ready than I am to surrender anything which I have proposed and to accept in its place anything that is better.

VOA: special.2009.03.19

I am going to say if that electron is to stay in its orbit, that is to say it doesn't flee the atom, it doesn't collapse under the nucleus then the sum of the forces on the electron must be zero No net force. And so that will be the sum of a dynamic force plus an electrostatic.

如果电子会保持在它的轨道上运行,既不脱离原子的话，它就不会由于原子核对它的吸引力而被瓦解掉,电子所受的合力一定为零,由于没有合力,所以电子所受力为动态力和静电力的总和。

麻省理工公开课 - 固态化学导论课程节选

"I am convinced that Haiti has a remarkable opportunity to escape the chains of its past for several reasons."

VOA: standard.2009.09.09

"It would really be a mistake, and I am sure the United States would not go in this direction, to give Hamas that authority on its own."

VOA: standard.2010.06.10

Parliament reconvened early from its summer recess to consider the implications of the release of the only man convicted of the bombing of Pan Am flight 103 over Lockerbie,Scotland,in 1988.

VOA: standard.2009.08.24