Kant denied biology the status of proper science, yet his account of the organism has received much attention from both philosophical and historical perspectives. This book argues that Kant's influence on biology in the British Isles is in part due to misunderstandings of his philosophy. Highlighting these misunderstandings exposes how Kant influenced various aspects of scientific method, despite the underlying incompatibility between transcendental idealism and scientific naturalism. This book raises criticism against scientific naturalism as it demonstrates how some concepts that are central to biology have been historically justified in ways that are incompatible with naturalism. Approaching current issues in philosophy of biology from a Kantian orientation offers new perspectives to debates including our knowledge of laws of nature, the unity of science, and our understanding of organisms. Moreover, new avenues are forged to demonstrate the benefits of adopting Kant-inspired approaches to issues in contemporary philosophy of science.