It is challenging to rate the intelligence of individuals who lived in different time periods and had different areas of expertise. Intelligence is a complex and multifaceted trait that cannot be accurately measured or compared directly. Furthermore, comparing the intelligence of individuals from various disciplines and historical contexts can be subjective and influenced by personal biases.
That being said, Karl Marx was undoubtedly a highly influential and significant thinker in the field of political philosophy and economics. His ideas have had a profound impact on various aspects of society, and his writings continue to be studied and debated by scholars around the world. Marx's works, such as "The Communist Manifesto" and "Capital," are considered seminal contributions to the critique of capitalism and the development of socialist thought.
In terms of historical significance and the influence of their ideas, Aristotle, Isaac Newton, René Descartes, and Albert Einstein are also regarded as remarkable thinkers in their respective fields. Aristotle made significant contributions to fields such as philosophy, logic, biology, and ethics. Newton is widely known for his groundbreaking work in physics and mathematics, including his laws of motion and the theory of gravity. Descartes is celebrated for his contributions to philosophy, mathematics, and the development of modern rationalism. Einstein's work revolutionized our understanding of physics, particularly with his theory of relativity.
Attempting to rank or compare the intelligence of these individuals is subjective and depends on various factors such as their respective domains of expertise, the impact of their ideas, and the historical context in which they lived. It is more useful to appreciate the unique contributions and insights that each of these great thinkers has made to their respective fields rather than trying to assign a hierarchical intelligence rating.