The work of Theodor Waitz is an important but hitherto unnoticed source of Dilthey’s concept of ‘human sciences’. Waitz was an outstanding philosopher and psychologist who, in the late 1850s, devoted himself wholeheartedly to empirical anthropology. In this field Waitz distinguished himself for his defence of the unity of humankind against mainstream polygenic and racial doctrines. Waitz inspired Dilthey’s articulation of psychology into two branches: the ‘descriptive’ one and the ‘explanative’ one. Even more remarkably, in a work reviewed by Dilthey (...) in warmly favourable terms, Waitz explicitly mentioned and defined the ‘sciences which treat of the spirit ’. Some of Dilthey's most interesting ideas are thus prefigured in Waitz’s long underrated work. (shrink)

In this paper, I discuss the different views of the founders of descriptive psychology in the 19th century about the meaning and purpose of this discipline and sketch a new plan for connecting descriptive psychology with the language-critical tradition of analytic philosophy. I will show that the goals Hermann Lotze, Franz Brentano, and Wilhelm Dilthey set for descriptive psychology were too lofty for different reasons. The common problem they faced was how to reconcile the ideal of autonomous philosophical knowledge with (...) the empirical relevance that descriptive psychology should have. Faced with this dilemma, I outline a new plan to conceive of descriptive psychology as a critical project aimed at overcoming the obstacles that language places in the way of our knowledge of mental phenomena. (shrink)