[MrLeRoy]

Natural rights derive from man's nature---specifically, his free will and reason. As a free-willed reasoning being, a man is able to formulate and pursue his own ends, and it is thus contrary to his nature to use him as a means to one's own ends. Thus, a man has the right to perform any action that violates nobody else's rights.

[robertpaulsen]

And these are different from unalienable rights?