After gaining his doctorate [Marx] thought of becoming a philosophy lecturer, but then decided that daily proximity to professors would be intolerable. 'Who would want to have to talk always with intellectual skunks, with people who study only for the purpose of finding new dead ends in every corner of the world!' Besides, since leaving university Marx had been turning his thoughts from idealism to materialism, from the abstract to the actual. 'Since every true philosophy is the intellectual quintessence of its time,' he wrote in 1842, 'the time must come when philosophy not only internally by its content, but also externally through its form, comes into contact and interaction with the real world of its day.' That spring he began writing for a new liberal newspaper in Cologne, the Rheinische Zeitung; within six months he had been appointed editor.