Articles
Philosophy
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In the fourth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR), obsessive-compulsive disorder (OCD) can be diagnosed with a specifier of ‘with poor insight’ whenever the individual does not recognize that the obsessions or compulsions are excessive or unreasonable” (300.3). Yet some insight must have occurred, since by definition, adults with Obsessive-Compulsive Disorder have…
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The prevailing view in North American philosophical writing seems to be that the phrase ‘just in case’ can be translated into the phrase ‘if and only if’. Consequently, this view holds that the phrase ‘just in case’ is best symbolized by the logical connective known as the biconditional (↔). Now, this seems wrong to me…
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In Book 6 of his Meditations, Marcus Aurelius makes some remarks about the character of Antoninus Pius, his predecessor as Emperor of Rome, and his adoptive father. Marcus warns himself against being seen as like Julius Caesar, and says to avoid this he must live a good and humble life and conduct his duties in such…
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In Book I of his traditionally-titled Against the Logicians (Book VII of Adversus Mathematicos), Sextus Empiricus presents a critique of how past philosophers have attempted to define the human being. He notes that these philosophers would pass off a definition as an “explanation of man” (132), a strategy that, for Sextus, would surely fail. First is the account that…
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In his third letter of correspondence with Samuel Clarke, Leibniz outlines his position on the nature of space. Contrary to Newton, and Clarke who defends him, Leibniz holds that space is “something purely relative” (14), that space is not a substance or a thing that exists, but rather the relationship between the objects it seems…
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In Book I of On the Nature of Things[1], Lucretius provides arguments for the existence of two main things that exist: matter and the void. Further, he argues that there are no other types of things besides these. First, Lucretius asserts that matter is known to exist by means of sensory perception. We see matter, we…
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According to Leibniz, the actual world is the best of all possible worlds. He outlines a simple argument for this conclusion in The Monadology, §§53-55. The argument proceeds as follows: God has the idea of infinitely many universes. Only one of these universes can actually exist. God’s choices are subject to the principle of sufficient reason, that…
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In Book I, Chapter VII of his Confessions, Augustine makes some comments on the innocence of infants. I’m not a huge fan of religious philosophy, but I found this passage kind of amusing. Augustine says that the actions of infants are “reprehensible” (8), the way they cry loudly for nourishment, constantly demanding the attention of their…
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Here’s a tautology in propositional logic: ⊨(P → Q) ∨ (Q → R) Try throwing that into English. Here’s a reading using some propositions I just came up with: “I’ll die if I’m immortal, or I’ll live if I die.” Obviously, neither of those are the case. But this formula, (P → Q) ∨ (Q…