Liberty

We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and Secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.

The term "liberty" appears in the due process clauses of both the Fifth and Fourteenth Amendments of the Constitution. As used in Constitution, liberty means freedom from arbitrary and unreasonable restraint upon an individual.
             ******
Liberty is secured by limiting the power of government to prevent it from abusing the people's rights.
             ******