No man may obtain values through the initiation of physical force. The government is separated completely from the economy. An axiom states an irreducible primary . It is perceived as a fundamental truth about reality that cannot be analyzed any further. Axioms are implicit in all knowledge and reasoning - any attempt to prove them or to deny them is based on an acceptance of their truth.
Existence exists is an axiom.
You can define existence as that which exists , but the definition is circular. All concepts are derived from existence, therefore it is not possible to define existence in terms of something more fundamental. That is what makes it axiomatic. Existence is grasped perceptually - open your eyes and what you see is part of existence. It is the total of all that exists .