Answer :
Final answer:
The author includes these sentences to emphasize the significance of his critics' letter.
Explanation:
The author's purpose for including these sentences is to emphasize the significance of his critics' letter. By stating that he receives numerous criticisms and acknowledging the good intentions behind them, he shows the importance of addressing their concerns. However, he also highlights the challenges of dedicating time to respond to every criticism and the need to balance constructive work with engaging with his critics.
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