Definition
Inalienable (Individual) Rights are: natural rights to life, liberty,
and the pursuit of happiness. They are the most fundamental set of
human rights, natural means not-granted nor conditional. They are
applicable only to humans, as the basic necessity of their survival.
Criticism
The signers of the Declaration of Independence deemed it a "self
evident truth" that all men are "endowed by their Creator with certain
unalienable Rights". Critics, however, could argue that use of the word
"Creator" signifies that these rights are based on theological
principles, and might question which theological principles those are,
or why those theological principles should be accepted by people who do
not adhere to the religion from which they are derived.
Derivation of inalienable rights from Natural Law can also be
criticized on solely philosophical grounds. The is-ought problem of
David Hume is the fallacy of deriving normative propositions (how the
world ought to be) from naturalistic ones (how the world is) without
providing the necessary justification for such a logical jump. Jonathan
Wallace claims in his paper "Natural Rights Don't Exist," that the
phrase "We hold these truths to be self-evident" is simply a "more
elegant version of 'Because we said so.'"