But what Is Natural Law? It implies that ethical laws are like “laws of nature” or scientific laws. This discussion implies that the word law has more in common with civil laws than with natural laws, because both civil and ethical laws can be disobeyed.On this common view, since human beings are by nature rational beings, it is morally appropriate that they should behave in a way that conforms to their rational nature. According to natural law theory of law, there is no clean division between the notion of law and the notion of morality.