The Walking Dead has set out to test how well we listen to Rick this season. While many may remember that Rick utters these words under his breath as Carl takes his last breaths, they probably don't remember that Rick first intones these words in the season opener as the wounded Rick sitting under the tree. As with the imagery, we are unaware of the time and context, but the clues are there in the lighting and the sound of the wind in the leaves. In many ways, the words are more troubling than the defeat in Rick's eyes because the phrase confirms from the start that Rick does not fulfill his promise to Carl nor himself.