Understanding the soul's essence is an elusive pursuit, rendering any attempt to write about it akin to grasping at a mirage. As a sublime subject, the soul has captivated human thought for centuries. How do we approach it? How can we define its boundaries? This exploration offers an experimental investigation into the soul's complexities during one of Spain's most turbulent periods—the dawn of modernity. Set against the spiritual backdrop of the 17th century, these reflections examine how materiality ensnared individuals in artifice, often neglecting expansionism's social and political consequences. The Twelve Years' Truce (1609) and the Thirty Years' War (1618–1648) marked critical moments of instability, further compounded by economic depression and social turmoil. In this landscape of despair, the Spanish soul sought refuge inwardly and through indulgence in worldly pleasures. Through metaphysical inquiry, emotional depth, and the role of animated matter in art and theater, this book reflects on existence amid the illusions of early modern Spain.