Great reformers from Abraham Lincoln to Martin Luther King have urged America to live up to its ideal of "freedom".

从亚伯拉罕·林肯到马丁·路德·金，历代改革家们都敦促美国实践其自由之理想。

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It could be Martin King, it could be Abraham J. Heschel, it could be Noam Chomsky.

可以是马丁路德金，可以是赫舍尔，也可以是乔姆斯基。

普林斯顿公开课 - 人性课程节选

As he was sworn in, Mr Obama placed his left hand on bibles owned by legendary American civil rights leader Martin Luther King Jr and President Abraham Lincoln.

BBC: Inauguration: Barack Obama tells US to seize the moment

He repeated those words at Monday's public inauguration, placing his left hand on Bibles owned by legendary American civil rights leader Martin Luther King Jr and President Abraham Lincoln.

BBC: Inauguration: Barack Obama is sworn in for second term

Obama infused his speech with references to two assassinated American icons -- President Abraham Lincoln and civil rights leader Martin Luther King Jr.

CNN: Obama's speech ties current issues to founding principles