The unifying theme in this second volume of essays by William A. Wallace to be published in the Variorum series is signaled in the title of the opening paper: 'Domingo de Soto and the Iberian roots of Galileo's science'. The seven essays in the first part provide textual studies of Soto's early formulations of the laws of falling bodies, the context in which they were developed in the 16th century, and the ways in which they were transmitted in Spain and Portugal to the early 17th century, mainly by Jesuit scholars. The following essays focus on the young Galileo and his work at Pisa and Padua, leading to his discovery of the law of uniform acceleration in free fall. Textual evidence is presented for an indirect influence of Soto's work on Galileo, mediated by Jesuits who were teaching at Padua in the first decade of the 17th century.
Contents: Preface; Domingo de Soto: Domingo de Soto and the Iberian roots of Galileo's science; The enigma of Domingo de Soto: Uniformiter difformis and falling bodies in late medieval physics; Domingo de Soto‘s laws of motion: text and context; Late 16th-century Portuguese manuscripts relating to Galileo's early notebooks; Duhem and Koyr n Domingo de Soto; Quantification in 16th-century natural philosophy; The certitude of science in Late Medieval and Renaissance thought; The Early Galileo: Galileo‘s sources: manuscripts or printed works?; Galileo's concept of science: recent manuscript evidence; The dating and significance of Galileo's Pisan manuscripts; Galileo‘s Pisan studies in science and philosophy; Circularity and the Paduan Regressus: from Pietro d'Abano to Galileo Galilei; Galileo's regressive methodology, its prelude and its sequel; Dialectics, experiments, and mathematics in Galileo; Index.