Adam Smith homely observations, making them feel comfortable all along." Classical economists presented competing theories of those of Smith, termed the "labour theory of value". Later Marxian economics descending from classical economics also use Smith's labour theories, in part. The first volume of Karl Marx's major work, "Das Kapital", was published in German in 1867. In it, Marx focused on the labour theory of value and what he considered to be the exploitation of labour by capital. The labour theory of value held that the value of a thing was determined by the labour that went into its production. This contrasts with
Thomas Kuczynski of his study of compensation claims for forced labour victims of the Nazi years (""Entschädigungsansprüche für Zwangsarbeit im ‚Dritten Reich‘ auf der Basis der damals erzielten zusätzlichen Einnahmen und Gewinne""). Kuczynski concluded that the German Federal Republic should pay victims of forced labour under Nazi Germany approximately 180 Billion Deutsche Marks. Later, in his book ""Brosamen vom Herrentisch"", he increased his estimate to 228 Billion Deutsche Marks (equivalent to €116 Billion). In 2007 Kuczynski took part in the theatre project, "Karl Marx: Das Kapital - Erster Band" (""Karl Marx: Das Kapital - First volume""), a show presenting a range of