Third Utrecht edition, expanded. Quarto. Bound in contemporary full vellum. Large folding plate with a portrait of the author.
 
A very good copy.
 
Gerard De Vries was professor of philosophy at Utrecht and one of the leading academic opponents of Cartesianism in the Dutch universities. His Exercitationes rationales de Deo was first published in Utrecht in 1685, followed by a second edition in 1689, before the present edition in 1695. This edition added his essays De cogitatione ipsa mente, and De ideis rerum innatis, his On Thought as the Mind Itself, and On Innate Ideas of Things.