The only way to try and punish Black for the early capture on d4.
1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. d2d4  3... c5d4  4. f3d4  4... g8f6  5. b1c3  5... b8c6  6. g2g3 This modest  move is very popular in Paris. 6... c6d4  7. d1d4  7... g7g6 