Libertarianism is the philosophy that says that people should be free from individual, societal, or government interference to live their lives any way they desire, pursue their own happiness, accumulate wealth, assess their own risks, make their own choices, participate in any economic activity for their profit, engage in commerce with anyone who is willing to reciprocate, and spend the fruits of their labor as they see fit. As long as people don’t violate the personal or property rights of others, and as long as their actions are peaceful, their associations are voluntary, and their interactions are consensual, they should be free to live their lives without license, regulation, interference, or molestation by the government. 

— Laurence M. Vance, "Libertarian Litmus Tests"