"Old age comes on suddenly, and not gradually as is thought." Emily Dickinson
The link leads to Palmer's reflection and a beautiful poem on Remrandt's Late Self-Portraits by Elizabeth Jennings
...To the last
Experiment went on. You stared beyond
Your age, the times. You also plucked the past
And tempered it. Self-portraits understand,
And old age can divest,
With truthful changes, us of fear of death.
Look, a new anguish. There, the bloated nose,
The sadness and the joy. To paint's to breathe,
And all the darknesses are dared. You chose
What each must reckon with.