According to the system of natural liberty, the sovereign has only three duties to attend to; three duties of great importance, indeed, but plain and intelligible to common understandings: first, the duty of protecting the society from the violence and invasion of other independent societies; secondly, the duty of protecting, as far as possible, every member of the society from the injustice or oppression of every other member of it, or the duty of establishing an exact administration of justice; and, thirdly, the duty of erecting and maintaining certain public works, and certain public institutions, which it can never be for the interest of any individual, or small number of individuals to erect and maintain; because the profit could never repay the expense to any individual, or small number of individuals, though it may frequently do much more than repay it to a great society.
Adam Smith, Wealth of Nations
Fun stuff this. However don’t be tempted down the rabbit hole of becoming a libertarian as a result – society and the well-being of your fellow man is too important to get hung up too much on yourself. We have duties as well as rights. But as it stands, it’s a good introduction to the idea of self-ownership and property rights. Enjoy!