Materialism:

The German materialist and atheist anthropologist Ludwig Feuerbach would signal a new turn in materialism through his book, The Essence of Christianity (1841), which provided a humanist account of religion as the outward projection of man's inward nature. Feuerbach's materialism would later heavily influence Karl Marx.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". The author's ideas would later influence what well known philosopher?
Karl Marx