The Constitution does not say anything about inalienable rights. Its the Declaration of Independence that talks about inalienable rights. Those inalienable rights discussed are life, liberty and the pursuit of happiness.
The Constitution and the bill of rights outlines how the founding fathers, and those who followed them and made amendments, set things up so that we could enjoy our inalienable rights of life, liberty and the pursuit of happiness.
Since then court ruling have been made to allow for situations where rights can be suspended, but those rules are pretty strict, and have to do with doing things that infringe on other people's rights to life, liberty and the pursuit of happiness.