(October 6, 2014 at 10:09 am)alpha male Wrote: The existence of slavery and prisons through the ages show that liberty isn't a fundamental human need.
No, they don't. The denial of a need being met is not evidence regarding anything about its nature.
(October 6, 2014 at 10:09 am)alpha male Wrote: Regarding legitimate human needs, how do you objectively prove that all people have a right to have those needs met?
Why would I have to prove anything of the sort? Just because you have a need - fundamental or otherwise - doesn't mean you are entitled to having those needs met.