"He had to deal all at once with the packed regrets and stifled memories of an inarticulate lifetime"

In this quote, the author is explaining a character who is dealing with a tough and frustrating circumstance. The expression "jam-packed remorses" recommends that this person is burdened with a plethora of previous mistakes and missed out on chances. These regrets are "stifled," indicating they have actually been suppressed or kept covert, perhaps out of worry or shame. The reference of "memories" implies that these remorses are connected to particular occasions or experiences from the character's past. Using "inarticulate" recommends that this person struggles to express their emotions and thoughts efficiently. Overall, the quote communicates a sense of inner turmoil and the weight of a life time's worth of remorses and unspoken feelings.