"Here I am, worried and anxious; there she is, serenity incarnate. How can she appear before me like a human reproach? Like an ironic comment on my own life. How can she never suspect I might be miserable? Unlike myself, she is not protected by a mature, philosophical outlook on existence. Compared to me she is a child. No struggle has tested her strength, no disappointment has yet caused her spirit to waver. But that's it, by God! That's the very reason she is the stronger. She has lost nothing of herself. She has not been devoured by vultures and wolves! She is untouched. She lives life to the full. However feeble the flame within her it is enough to light her way. But as for me, the fire in my heart burns me alive."
January 1, 1970
https://en.wikiquote.org/wiki/George_Sand