The head of Mauritania's democratic opposition, Ahmed Ould Dadah, says General Aziz's candidacy is illegal even if he resigns his military commission because Mauritanian law prohibits those who take power by force from runningin the next election.

VOA: standard.2009.03.29

I can't sell myself into slavery any more than I can take somebody else's life or take someone else as a slave by force.

不能将自己变卖为奴隶,我也不能剥夺他人生命，或胁迫他人成为奴隶。

耶鲁公开课 - 公正课程节选

You cannot say to me, "Take a force, due to a spring, and see what force it applies and divide by the acceleration and get the mass, " because we haven't defined force, either.

你不能说,"给弹簧施加一个力,看看它能提供多大的力,然后除以加速度,得到质量",因为我们还没给力下一个定义

耶鲁公开课 - 基础物理课程节选