The Dec. of Indep. links these words with "the pursuit of happiness"; the U.N. links them with "security of person"
The 
first striking difference I see is that the UN document uses the word inalienable 
... liberty, and the pursuit of happiness; that, to secure these rights,... [DOC] [TLE] Global History and Geography [PAR] Jan 28, 2011 ... select the link Scoring Information for any recently posted informa- .... Man and 
the Citizen and to the United Nations Universal Declaration of Human ... different 
words.