The writer expresses profound gratitude for the comforting letter and verses he received. He recounts a painful encounter with Jean-Jacques Rousseau, who, through manipulation and deceit, stirred public opposition against him in Geneva, resulting in both financial loss and personal distress. The writer highlights Rousseau’s hypocrisy and ingratitude, contrasting it with his own steadfast commitment to literary and personal integrity. He concludes by affirming his admiration for the recipient’s military and literary achievements, pledging enduring esteem and unwavering support.