The ideals of Life, Liberty, and the Pursuit of Happiness as defined in the Declaration of Independence could have been taken one step farther: The Right to Remain Undisturbed.
That is the inalienable right remembered (not earned) through meditation.
The following beautiful quote from the pagan Stoics in 300 BC is relevant:
“It is a mistake to imagine that slavery pervades a man’s whole being; the better part of him is exempt from it: the body is (may be) subjected and in the power of a master, but the mind is independent, and indeed is so free and wild that it cannot be restrained even by this prison of the body, wherein it is confined.”
Not only is it possible to remain undisturbed by external events, it is also possible to remain undisturbed by thoughts passing on the screen of the mind. That is the definition of meditation.