Lloyd Strickland is Professor of Philosophy and Intellectual History at Manchester Metropolitan University (UK). His principal research interests are Early Modern Philosophy (especially Leibniz), and Philosophy of Religion. In addition to numerous journal articles he has published nine books, including Leibniz Reinterpreted (2006), Leibniz and the Two Sophies (2011), Leibniz’s Monadology (2014), Leibniz on God and Religion (2016), Tercentenary Essays on the Philosophy and Science of Leibniz (2017, with Julia Weckend and Erik Vynckier), Proofs of God in Early Modern Europe (2018), and Leibniz's Key Philosophical Writings (2019, with Paul Lodge). He also runs a website which contains many of his translations of Leibniz’s writings: http://www.leibniz-translations.com Julia Weckend has taught philosophy at the Universities of Southampton and Reading before joining Oxford University’s Department for Continuing Education as a tutor in 2014. Her research interests are Early Modern Philosophy, in particular Leibnizian metaphysics and epistemology. Her publications include papers on Leibniz’s notions of freedom and possibility, Leibniz’s notion of certainty, and a new translation of Leibniz’s "On the True Mystical Theology" to be found in Lloyd Strickland’s volume Leibniz on God and Religion (2016). She is the co-editor of Tercentenary Essays on the Philosophy and Science of Leibniz (2016).