This book, which includes a preface written by David Darst, argues that Francisco de Quevedo's metaphysical poetry should be read in the light of the Neo-Stoic theory of Time that he explains in his philosophical prose works. An analysis of the philosophical prose and the poetry of Gabriel Boc ngel y Unzueta assesses and determines the impact of Quevedo's ideological presence in the work of other Spanish poets. This is the first detailed textual exegesis of Boc ngel's and Quevedo's philosophical works as they relate to the metaphysical poetry of these two Golden Age authors.