Thomas Robert Malthus was a British cleric and scholar and have great influence in some fields such as economic and political. It was the year 1798 that the book entitled "The Essay on the Principle of Population" was published. The book has a great influence on Charles Darwin, he is an English naturalist and geologist. The book was one of the many resources that Charles Darwin used for his theory. Without the influenced on Thomas Robert Malthus, Charles Darwin will not be that successful and be known today.