 Some philosophers singled out a particular passion, or group of passions, to head off their taxonomies. In rather different ways, that was the role of wonder for Descartes, and of glory for Hobbes (see Schmitter 2017). Malebranche took there to be an irreducible element of love in every passion. Mary Astell, in turn, called love of God “the leading and Master Passion” (Letters Concerning the Love of God, Letter VII). An even more common organizing device was to divide the passions into simple and complex. Not only did this impose a manageable order on the many recognized passions, it allowed explanation to be focused on the simplest cases, with the expectation that other emotions would fall into line, either as compounds, offspring, or species of the simples. The simple passions themselves were organized into contrasting groups, based on their evaluative character. Schemes of this kind can be found in Descartes, Malebranche, Spinoza, Thomas Wright, and to a lesser extent, Hume.