Marx had a unique way of defining commodities and money. His theory of the money commodity was different from others. He critiqued the ideas of utopian socialists on money, labor time, and exchange value. Marx used Hegel's method and ideas from his work on 'measure' to develop his concept of money. He also related 'price' in circulation to 'value' in production, similar to Hegel's ideas on 'force' and 'manifestation'. These influences can be seen in Marx's writings in Grundrisse and Capital I.