Ninon de l’Enclos to Saint-Evremond:

          A sprightly mind is dangerous to friendship.  Your letter would have spoiled any one but me.  I know your lively and astonishing imagination, and I have even wanted to remember that Lucian wrote in praise of the fly, to accustom myself to your style.  Would to Heaven you could think of me what you write, I should dispense with the rest of the world; so it is with you that glory dwells.
          Your last letter is a masterpiece.  It has been the subject of all the talks we have had in my chamber for the past month.  You are rejuvenating; you do well to love.  Philosophy agrees well with spiritual charms.  It is not enough to be wise, one must please, and I perceive that you will always please, as long as you think as you do.
          Few people resist age, but I believe I am not yet overcome by it.  I could wish with you, that Madame Mazarin had looked upon life from her own viewpoint, without thinking of her beauty, which would always have been agreeable when common sense held the place of less brilliancy.  Madame Sandwich will preserve her mental force after losing her youth; at least I think so.
          Adieu, my friend.  When you see Madame Sandwich, remember me to her, I should be very sorry to have her forget me.