That both parties agree in deducing all the Phaenomena of Nature from Matter and Local motion; I esteem‘d that notwithstanding those things wherein the Atomists and the Cartesians differ’d, they might be thought to agree in the main, and their Hypotheses might by a Person of a reconciling Disposition be look’d on as, upon the matter, one Philosophy. Which because it explicates things by Corpuscles, or minute Bodies, may (not very unﬁtly) be call’d Corpuscular.
Robert Boyle, The Physiological Essays, 1661.
Robert Boyle’s attempt to redraw the 17th century lines of debate about nature. For Boyle the major dividing line is between the scholastics who invoke forms to explain nature, while the Cartesians and the Atomists agree that the effects of nature can be explained using the principles of matter and motion. The latter two he therefore groups together under the Corpuscular Philosophy. Boyle argues that the differences between Cartesians and Atomists are either purely metaphysical or of minor theoretical importance. One such difference was that the Cartesians argued for a plenum (an entirely “full” world with no gaps) while the atomists believed the world was particles in a vacuum. Boyle describes himself as a corpuscularian, avoiding the term atomist which had become strongly linked to atheism.
This essay was the subject of correspondence between Henry Oldenburg and Spinoza, with Boyle participating at second hand in certain of the letters. Spinoza explicitly disagreed on some points of Boyle’s, for example the existence of vacuum, and even Boyle’s attempt at broad agreement between Cartesians and atomists was problematic for his philosophy. For more on the correspondence and the differences in position of Spinoza and Boyle see:
Filip Buyse (2013) Boyle, Spinoza and the Hartlib Circle: The Correspondence Which Never Took Place (online)
Filip Buyse (2010) Spinoza and Robert Boyle’s Definition of Mechanical Philosophy, Historia Philosophica, 8:73-89. (Academia)
Peter Millican (2009) Robert Boyle’s Corpuscularian Theory, YouTube.