This book contains 23 essays, the result of Noel Golvers’ research of the 35 years between the commemoration of the 300th anniversary of Verbiest’s decease in 1988 and the celebration of the 400th anniversary of his birthday on 9 February 2023. They are focusing on 23 less studied aspects of his life and work and are complementing his previous editions of Verbiest’s main Western publications, viz. his Astronomia Europaea (ed. 1991) and his astronomical corpus, including the ‘Athenian texts’ Compendium Historicum and Mechanica (with Efthymios Nicolaidis, 2009), his Correspondence (2017) and his Postulata Vice-Provinciae Sinensis in Urbe proponenda (2018), which delivered the main sources for the 23 essays.