Ismail Kurun

This study is the first part of an attempt to settle a vigorous debate among historians of medieval philosophy by harnessing the resources of analytic philosophy. The debate is about whether Avicenna's epistemology is rationalist or empirical. To settle the debate, I first articulate in this article the three core theses of rationalism and one core thesis of empiricism. Then, I probe Avicenna's epistemology in his major works according to the first core thesis of rationalism (the intuition thesis). In the end, I find Avicenna committed to this thesis in at least one substantive way, namely, in his claim to intuit the intelligible forms or essences. This suffices to count Avicenna as rationalist. In a subsequent article, I shall probe Avicenna's epistemology according to the other two core theses of rationalism, presenting further evidence that he was a rationalist, not an empiricist.

Karl Popper’s critique of idealism manifests itself with the application of his method, falsificationism, to metaphysics, epistemology, and social and political philosophy. According to Popper, who identifies himself as a philosophical realist, idealism has emerged as a result of the idea that reality cannot be known by reason and of the search for certainty which is erroneous, and it has begotten two mistaken and detrimental views. These views are historicism, the notion that history has an irresistible course, and holism, the notion that social wholes are organic structures that amount to more than the individuals constituting them. Historicism and holism have become the philosophical underpinnings of closed societies throughout history, such as the totalitarian regimes of the 20th century. Therefore, with a practical leaning, Popper actually takes aim at these pernicious consequences of idealism while criticizing it. In this study, idealism and the contours of Popper’s philosophy are examined, and then Popper’s metaphysical, epistemological, social, and political critiques against idealism are investigated. Keywords: Karl Popper, idealism, historicism, holism, falsificationism

This book offers a critical survey of the origins of liberalism. It challenges the widely-held belief among philosophers that liberalism developed in opposition to religion. Beginning with the Protestant Reformation, it illustrates how Christian thinkers reinterpreted Christianity and used a set of biblical presuppositions from their reinterpretations to develop the first liberal ideas, starting a process that culminates in the birth of the first systematic liberal political philosophy in the writings of a Christian philosopher, John Locke. Foreworded by Michael A. Gillespie, the author of The Theological Origins of Modernity, this book explains how the Protestant Reformation, covenant theology, anti-trinitarianism, and medieval Christian natural law theories formed the foundations of liberalism. Thus, the main argument of this book is that liberalism is better understood as a socio-political project of theistic rationalism, a radical reinterpretation of Christianity that emerged in the post-Reformation and early modern period.