In this passage from Harper Lee’s novel To Kill a Mockingbird, Atticus Finch is justifying his defense of Tom Robinson to Link Deas, who has questioned Atticus’s motives on moral grounds. The language technique used in this passage is alliteration.
Alliteration is defined as the repetition of the initial letter of a number of words in a phrase or line. An example of this is “pied piper.” The purpose of alliteration is to create emphasis.
The example of alliteration in this passage comes in the following quote, “till the truth’s told.” Each of these words begins with the consonant “t.” The use of alliteration here illustrates the importance of the truth in the case of Tom Robinson. For Robinson, the truth really is a matter of life or death. Therefore, using the alliterative construction within this passage underscores this reality.