The fundamental assumption on which the idea of the rule of law is based is

The fundamental assumption on which the idea of the rule of law is based is the supremacy of the constitution. The rule of law is a fundamental principle of modern democratic societies, which holds that everyone is subject to the law, including the government itself. The idea of the rule of law means that laws must be clear, predictable, and accessible to everyone, and that they must be enforced in a fair and consistent manner. The supremacy of the constitution means that the constitution is the highest law of the land, and that all other laws and actions of government must be in accordance with it. This ensures that the government operates within the limits set by the constitution, and that the rights and freedoms of individuals are protected. While the rationality and equality of human beings, as well as love for social justice, may also be important principles for a just and democratic society, they are not the fundamental assumption on which the idea of the rule of law is based.