Introduction, 1. — I. On specialization and general culture, 3. — II. On the strict sciences and the different but not inferior philosophical and ethical inquiries, 5. — III. Further, on emotions, knowledge, and value judgments; and the interdependence between reflective evaluative thinking and “objectivity” in the social sciences, 9. — IV. Finally, on the political philosophies and economic theories of historic schools of political economists; and the lessons to be learned, for the benefit of modern work, through critical historical study of their intellectual mistakes and achievements, 14.