The Problems, which occupy pp. 859-967 of the Berlin Aristotle, have probably been less read and studied than any other treatise in the Aristotelian Corpus; they contain, however, a vast quantity of interesting information on a great variety of subjects, and an enquiry into their composition may be not without interest.

Although in most situations approaching desired end-states entails decreasing distance between oneself and an object, and avoiding undesired end-states increases such distance, in some cases distancing can also be a means to approach a given goal. We highlight examples involving responses to obstacles to achievement and self-control dilemmas, showing that motivational direction is not equivalent to the motivational strategy involved when people pursue their goals.

Science, in general, and chemistry in particular advances by methods that are difficult to codify. The availability of theories (models) and instrumentation play an important role but indefinable motivations to study individual phenomena are also involved. The area of chromium photophysics has a rich history that spans 150 years. A case history of the progression from the natural history stage to its present state reveals the way in which several factors that are common to much physical science research interact.

A short article was published in the Classical Quarterly in 1921 entitled ‘Some Emendations in the Fragments of Theophrastus,’ which sought to show that several passages of Theophrastus could be improved by a comparison with certain of the Pseudo-Aristotelian Problems where the author of the latter is obviously deriving his material from Theophrastus. A further comparison of the Problems and Theophrastus, carried out in the course of preparing an edition of the former, has led to the discovery of more parallel (...) passages and makes it possible to suggest further improvements in the text of several passages of Theophrastus. (shrink)

While translating the pseudo-Aristotelian Problems for the Oxford translation of Aristotle, I have frequently found it necessary to refer to the Fragments of Theophrastus , which are obviously the source of many of the Problems, in particular in books II., V., XX., XXIV., and XXVI. The condition of the text of both the Problems and the Fragments of Theophrastus leaves much to be desired, but considerable improvements are possible in those passages where the compiler of the Problems is adapting or (...) copying from Theophrastus. (shrink)

It is shown that, according to NF, many of the assertions of ordinal arithmetic involving the T-function which is peculiar to NF turn out to be equivalent to the truth-in-certain-permutation-models of assertions which have perfectly sensible ZF-style meanings, such as: the existence of wellfounded sets of great size or rank, or the nonexistence of small counterexamples to the wellfoundedness of ∈. Everything here holds also for NFU if the permutations are taken to fix all urelemente.