This edition aims to make Margaret Cavendishโs most mature philosophical work more accessible to students and scholars of the period. Grounds of Natural Philosophy is important not only because it is Cavendishโs final articulation of her metaphysics but also because it succinctly outlines her fundamental views on โthe nature of natureโโor the base substance and mechanics of all natural matterโand vividly demonstrates her probabilistic approach to philosophical enquiry. Moreover, Grounds spends considerable time discussing the human body, including the functions of the mind, a topic of growing interest to both historians of philosophy and literary scholars. This Broadview Edition opens to modern readers a vibrant, unique, and provocative voice of the past that challenges our standard view of seventeenth-century English philosophy.