I don't know about any of that. From everything I have heard, Jefferson believed it, as did all of the Founders.And lets be really truthful Fletch, even Jefferson who wrote that line about rights in the Declaration did not believe what he wrote and he knew it was only the equal of a public relations press release.
Obviously evolution is stuck and possibly reversing itself.
Every time the topic of "Natural Rights" I find it a bit disturbing how so many people believe that humanity is lacking in the intellectual ability to understand "cause and effect". Or just as fascinating is the number of folks who believe that rights are inherent, which is like saying everybody was born believing in the tooth fairy.
Rights are objective. Rights were derived from societies scrutinizing human behaviors in a social context - over a very long period.
Gezzzzzzzzzus...people, give human beings a bit more credit for their intellect, logic, and reason. No magic wands have been used in the creation of rights.