The name "Paul Heinrich Dietrich" can be quite a mouthful, which is why it's useful to have synonyms handy. One such synonym is "Baron d'Holbach," as Paul Heinrich Dietrich was a French-German philosopher and writer who went by this name. Other possible synonyms include "atheist," as he was known for his skepticism towards religion, and "Enlightenment thinker," as he was part of a group of intellectuals who championed reason and science over superstition and tradition. Some may also use "materialist" to describe him, as he believed that the world could be explained through natural causes rather than divine intervention.