When it is only through age that one gathers wisdom and experience, why this endles struggle to seem young?  Remember that beauty works from within, it cannot be put on and off like a garment, and it depends far more on the culture of the intellect, the tastes, sentiment and affections of the soul than the color of the hair, eyes, or complexion...Be kind, noble, generous, well-mannered, be true to yourselves and your friends, and the soft lines of these tender graces and noble virtues will reveal themselves in the face...we cannot be one thing and look another...There are indelible marks in every face showing the real life within.
Elizabeth Cady Stanton
Not all the saints were beautiful creatures.   Some of my favorites were pretty unattractive. (St. Joseph of Cupertino, St. Alphonsus di Ligouri, etc.)  Then, there are great saints that were very lovely.  (the Blessed Mother, St. Rose of Lima, St. Therese, St. Judith, etc.)  The "indelible marks in every face showing the real life within" is stated by Ms. Stanton in a negative context, to state that, in effect, external beauty is earned from virtue.  That's just an odd statement altogether.  It's an age-ist theory.   If I wanted to be mean, I would say that the reason thought this was because she was obese, and even while she grew in age, she was able to resist having many lines.  lol  (Hey, it's true!)
Some saints were beautiful, and then because of their spiritual trials through their having willingly suffered for Christ they became tired and worn, like Blessed Mother Theresa, or St. Benedicta of the Cross, St. Louie Marie de Montfort, etc.  
Ok, yes, wisdom is different than knowledge, but not so much to an agnostic in the sense that they all stem from self (and the experience over time and education).  I took her statement in the context of her own personal philosophies, and ChantCD has already demonstrated that this is well substantiated.  (I don't have any private docuмents on her at home.)
A lot of people have lived reasonably easy, easy lives.  People like Blessed Mother Theresa gave their lives for the poor, and boy... did she have a lot of wrinkles!  Lol!  Many women are afraid to break a nail to lift a box!   
I'm not trying to defend wrinkly people, lol, or even my own wrinkles, but my own opinion of both Ms. Stanton and her quote, with which I still disagree (sorry if that hurts your feelings, unnecessarily).