Skepticism, as a philosophical school of thought, has endured for over two millennia not by offering certainties, but by persistently questioning them. This book is an exploration of skepticism-not as a rejection of knowledge, but as a method of inquiry, a disciplined doubt, and a guide for navigating the boundaries of belief and understanding.

From its roots in ancient Greece to its reverberations in modern epistemology and science, skepticism has played a crucial role in shaping the intellectual history of the West. Figures like Pyrrho, Sextus Empiricus, and later Ren