First--The essential good in his possession by natural endowment, and
which is therefore inalienable. And, Second--The necessary conditions,
whatever they may be, of the operation of the inherent good as an
active principle. Some of these are inalienable, and others are
alienable. To this view of natural rights the common usage of language
conforms.
3. The _acquired rights_ of man are, such good, in the form of
benefits or privileges, as results to him from the performance of
duty.