In the letter dated 24 April 1775, Thomas writes that the ‘patriarch of Ferney’ [Voltaire] speaks at ease about envy, noting that ‘it is Apollo who speaks on the body of the serpent Pithon struck down at his feet. But the teeth of the monster are terrible, and not everyone has the arrows of the god. I wish you one of the arrows from his quiver. It is up to you to irritate the monster and to defeat him.’
In the letter dated 7 July 1775, Thomas writes that he was astonished to see his private letters printed in the Mercure as they are not suitable for the public eye. He quips that ‘Mr de Voltaire alone can have this right; all that escapes from his pen, can interest, and his praises become titles.’
In the letter dated 14 July 1778, Thomas deplores the circumstances of Voltaire’s funeral, and the prohibition of publicity and theatrical representation that followed his death.
In the letter dated 6 February 1779, he discusses the eulogy of Voltaire proposed by the academy, arguing that it must ‘awaken all the talents’ because ‘in celebrating him, one must speak his language, and verses worthy of him are the most beautiful homage.’

Voltaire writes that he does not know if the protectors of l’abbé Desfontaines will prevail against the horror that Paris has for him, or if the Chancellor will take away his privilege. He notes that he did as the recipient advised and has sent him a copy of a letter from Madame de Berniere. Voltaire states that he knows that the recipient often sees people who have the misfortune of dining with Desfontaines and asks that he shows them the letter, warning, however, that it should not be printed. He adds that he does not know of any better response to the horrors that this monster [Desfontaines] vomits and that he is sure that the recipient will make prudent use of the letter to inspire so much aversion for him that they will soon be delivered from a competitor whose satirical leaves are so incompatible with their ‘sage journal’.