John Maynard Smith was a British evolutionary biologist and geneticist, known for his work in the field of evolutionary game theory. He contributed significantly to our understanding of the evolution of cooperation and the dynamics of animal behavior. His ideas helped bridge the gap between biology and mathematics, making complex concepts more accessible. Smith is also recognized for his research on sexual selection and evolutionary stable strategies. He authored several influential books and papers, including "The Theory of Evolution," which have shaped modern evolutionary thought. His work continues to inspire scientists in various disciplines, including ecology and sociobiology.