It was at this period of her life that Ninon occupied her time more than ever in endearing herself to her friends.  As says Saint-Evremond:  “She contents herself with ease and rest, after having enjoyed the liveliest pleasures of life.”  Although she was never mistress of the invincible inclination toward the pleasures of the senses which nature had given her, it appears that Ninon made some efforts to control them.  Referring to the ashes which are sprinkled on the heads of the penitent faithful on Ash Wednesday, she insisted that instead of the usual prayer of abnegation there should be substituted the words:  “We must avoid the movements of love.”  What she wrote Saint-Evremond might give rise to the belief that she sometimes regretted her weakness:  “Everybody tells me that I have less to complain of in my time than many another.  However that may be, if any one had proposed to me such a life I would have hanged myself.”  One of her favorite maxims, however, was:  “We must provide a stock of provisions and not of pleasures, they should be taken as they come.”

That her philosophical principles did not change, is certain from the fact that she retained all her friends and gained new ones who flocked to her reunions.  Says Madame de Coulanges in one of her letters:  “The women are running after Mademoiselle de l’Enclos now as much as the men used to do.  How can any one hate old age after such an example.”  This reflection did not originate with Ninon, who regretted little her former pleasures, and besides, friendship with her had as many sacred rights as love.  From what Madame de Coulanges says, one might suppose that the men had deserted Ninon in her old age, leaving women to take their place, but Madame de Sevigne was of a different opinion.  She says:  “Corbinelli asks me about the new marvels taking place at Mademoiselle de l’Enclos’ house in the way of good company.  She assembles around her in her old age, whatever Madame de Coulanges may say to the contrary, both men and women, but even if women did not flock to her side, she could console herself for having had men in her young days to please.”

The celebrated English geometrician, Huygens, visited Ninon during a sojourn at Paris in the capacity of ambassador.  He was so charmed with the attractions of her person, and with her singing, that he fell into poetry to express his admiration.  French verses from an Englishman who was a geometrician and not a poet, were as surprising to Ninon and her friends as they will be to the reader.  They are not literature but express what was in the mind of the famous scientist: 

“Elle a cinq instruments dont je suis amoureux,
Les deux premiers, ses mains, les deux autres, ses yeux;
Pour le dernier de tous, et cinquieme qui reste,
Il faut etre galant et leste.”