Self Ownership

You own yourself.  To deny this implies that someone else could possibly own you.  This means that you should have final say as to what happens to your body.  Also because you own yourself entirely, you also are entitled to all of the product of your labor.  No person or government can have a preemptive claim to anything you earn.

Non Aggression  

We believe that the initiation of force or fraud as a means of achieving personal, political or social goals is never justified. The use of force against another person in an aggressive manner is always wrong. Force is only justified in self-defense in the defense of one’s life, liberty, or property.

 As adopted by the 2017 Libertarian Association of Massachusetts State Convention