To this order I belong, brother goatherds, to whom I return thanks for the hospitality and kindly welcome ye offer me and my squire; for though by natural law all living are bound to show favour to knights-errant, yet, seeing that without knowing this obligation ye have welcomed and feasted me, it is right that with all the good-will in my power I should thank you for yours.
There are no more uses of "natural law" in the book.
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There is much disagreement about natural laws, but everyone can agree that the concept was vital to the creation of the Bill of Rights.
All this was inviolable, like any set of natural laws.