The speakers in both “The First Fig” and “The September of My Years” reflect on the

Since there are no choices, so the answer is:

swiftness of life

Explanation:

The "First Fig" is a poem written by Edna St. Vincent Millay. It talks about life by comparing it to a "burning light." "The candle burns at both ends" means that the person is working hard every day to make himself productive. "It will not last the night" means that the person will one day not be able to work and die. So, this shows how fast life is.

"The September of My Years" is a song composed by Jimmy Van Heusen, an American composer. This was introduced in the title of Frank Sinatra's album (1965). It talks about a man's life and how everything changes so fast with the different seasons coming. By stating "One day, you turn around and its summer" means that life is really fast. And now, he was reminiscing about those times when he was still a kid and how we wished he could've cherished  those memories.

So, both of the speakers above reflect on the "swiftness of life."