"I believe that I am past my prime. I had reckoned on my prime lasting till I was at least fifty"

This quote by Maggie Smith reflects a feeling of disappointment and regret. It suggests that the speaker has pertained to the realization that their best years lag them, and that they had expected to remain in their prime for longer than they have. The speaker's usage of the word "reckoned" implies that they had actually prepared for their prime to last up until they were at least fifty, but now they have concerned terms with the fact that it has actually ended prematurely. This quote speaks to the concept that life is unforeseeable and that we can never ever be certain of what the future holds. It likewise serves as a tip to make the most of our time and to appreciate the moments we have while we still can.