Christian Wolff

The Types of Notions in “German Logic” of Christian Wolff (Research Article)

The article discusses the problem of classification of notions (Begriffe) by Christian Wolff, particularly in his “German Logic”. Wolff divides notions – as well as representations (Vorstellungen) in general – into obscure (dunkel, obscura) and clear (klar, clara). The clear notions are divided into distinct (deutlich, distincta) and indistinct (undeutlich, indistincta or confusa).