The historical figure remembered for his significant contribution to the theory of evolution is Charles Darwin. His groundbreaking work, particularly in the text On the Origin of Species, introduced the concept of natural selection as a mechanism for evolution. Darwin’s observations during his voyage on the HMS Beagle led him to articulate how species adapt over time, fundamentally altering the understanding of biological diversity. His ideas sparked considerable debate and provided a foundation for modern evolutionary biology. Darwin's influence extends beyond science, impacting various fields, including philosophy and psychology.