Did not influence Darwin

Several key figures and ideas did not influence Charles Darwin in the development of his theory of evolution by natural selection. Notably, the work of Gregor Mendel on genetic inheritance was unknown to Darwin during his lifetime, as Mendel's research was published in 1866 but largely overlooked until the early 20th century. Additionally, the concept of genetics as we understand it today had not yet emerged, meaning that ideas about heredity and variation were not part of Darwin's initial formulations. Furthermore, while Darwin was influenced by many scientific thinkers and theories of his time, he did not draw directly from the philosophy of vitalism or other non-scientific ideologies that sought to explain life processes.