This work investigates the development and historical impact of scepticism in Western thought from the Renaissance through the Enlightenment. Richard H. Popkin, a prominent historian of philosophy, utilizes extensive primary source analysis to trace how sceptical arguments shaped the intellectual landscape of early modern Europe. The book argues that the revival of ancient sceptical texts acted as a critical catalyst for the development of modern philosophy and scientific inquiry. By examining the transition from religious crisis to philosophical doubt, Popkin provides a comprehensive framework for understanding the evolution of modern rationalism.

Scholars and students of early modern history frequently cite this work as a foundational text for understanding the development of modern philosophical inquiry. Experts highlight the academic density of the prose and the thoroughness of the research as essential for anyone studying the history of ideas.