Conservatism and Libertarianism both have no Dogma. It's true because both a founding father of modern conservatim and a leading Libertarian intellectual (oxymoron?) have claimed this to be true.
What do you thnk?
"[L]ibertarianism is not and does not pretend to be a complete moral, or aesthetic theory; it is only a political theory, that is, the important subset. of moral theory that deals with the proper role of violence in social life. Political theory deals with what is proper or improper for government to do, and government is distinguished from every other group in society as being the institution of organized violence. Libertarianism holds that the only proper role of violence is to defend person and property against violence, that any use of violence that goes beyond such just defense is itself aggressive, unjust, and criminal. Libertarianism, therefore, is a theory which states that everyone should be free of violent invasion, should he free to do as he sees fit except invade the person or property of another. What a person does with his or her life is vital and important, but is simply irrelevant to libertarianism."
Six Myths About Libertarianism 8211 LewRockwell.com
In other words, the foundation of libertarianism is the non-aggression principle. I suppose you can call that a dogma if you like.