When You Are Old by William Butler Yeats

When you are old and gray and full of sleep,
And nodding by the fire, take down this book,
And slowly read, and dream of the soft look
Your eyes had once, and of their shadows deep;

How many loved your moments of glad grace,
And loved your beauty with love false or true,
But one man loved the pilgrim soul in you,
And loved the sorrows of your changing face;

And bending down beside the glowing bars,
Murmur, a little sadly, how Love fled
And paced upon the mountains overhead
And hid his face amid a crowd of stars.

This poem is very serene, and it's filled with sweet memories. Persona, the grandmother, is now old and she recollecting her memories from the past. This poem had me thinking about what kind of things I would remember as memorable when I become a grandpa. I'm sure I'll remember TCIS as memorable.
This persona does not want to be any older, and she has fallen inside this hole of reminiscence, feeling sad and wanting to travel back in times when she was young.