John Passmore (1914–2004) was a renowned Australian empirical philosopher and historian of ideas. In this book, which was originally published in 1952, Passmore's intention was to disentangle certain main themes in Hume's philosophy and to show how they relate to Hume's main philosophic purpose. Rather than offering a detailed commentary, the text provides an account based on specificity and critical scholarship, seeking to complement the other more comprehensive works on Hume's philosophy that had become available around the same time. This book will be of value to anyone with an interest in perspectives on Hume and Passmore's philosophical approach.