in 1812 and 1813 respectively. The second volume, 'The Subjective Logic', was published in 1816 the same year he became a professor of philosophy at the University of Heidelberg. Science of Logic is too advanced for undergraduate students so Hegel wrote an encyclopaedic version of the logic which was published in 1817 and expanded in 1827 with additional revisions in 1831.

In 1826, Science of Logic went