Classification One of the main topics of scientific research is classification. Classification is the operation of distributing objects into classes or groups—which are, in general, less numerous than them. It has a long history that has developed during four periods: (1) Antiquity, where its lineaments may be found in the writings of Plato and Aristotle; (2) The Classical Age, with natural scientists from Linnaeus to

Johann Gottlieb Fichte (1762—1814) Johann Gottlieb Fichte is one of the major figures in German philosophy in the period between Kant and Hegel. Initially considered one of Kant’s most talented followers, Fichte developed his own system of transcendental philosophy, the so-called Wissenschaftslehre. Through technical philosophical works and popular writings Fichte exercised great influence over his contemporaries, especially during his years at the University of Jena.

Simone Weil (1909—1943) The French philosopher Simone Weil is a confronting and disconcerting figure in modern philosophy. This is not simply because she was so many things at once—ascetic and mystic, teacher and factory worker, labour activist and political militant, social thinker and piercing moral psychologist, critical Marxist and heterodox Christian theologian—but because of the striking “untimeliness” of her thought. For unlike philosophers in the

The Problem of Induction This article discusses the problem of induction, including its conceptual and historical perspectives from Hume to Reichenbach. Given the prominence of induction in everyday life as well as in science, we should be able to tell whether inductive inference amounts to sound reasoning or not, or at least we should be able to identify the circumstances under which it ought to

Divine Command Theory Philosophers both past and present have sought to defend theories of ethics that are grounded in a theistic framework. Roughly, Divine Command Theory is the view that morality is somehow dependent upon God, and that moral obligation consists in obedience to God’s commands. Divine Command Theory includes the claim that morality is ultimately based on the commands or character of God, and

Conspiracy Theories The term “conspiracy theory” refers to a theory or explanation that features a conspiracy among a group of agents as a central ingredient. Popular examples are the theory that the first moon landing was a hoax staged by NASA, or the theory that the 9/11 attacks on the World Trade Center were not (exclusively) conducted by al-Qaeda, but that the US government conspired