The two groups of lines that show the turn, or volta, in the sonnet "Astrophil and Stella, Sonnet 19 are "When most I glory, then I feel most shame" and "My best wits still their own disgrace invent"
The turn to poetry can be understood as a way that authors use to create a change in the poem's rhetoric, that is, when they want to express a change in emotion or thought.
In sonnets, the volta is used to make a transition of thought, reach conclusions and answer questions or make changes throughout the sonnet.
Therefore, in the opening lines of the poem that says "When most I glory, then I feel most shame"and in the lines that say "My best wits still their own disgrace invent" we can see the transition of thought from one extreme to the other, generating a contrast between the author's emotions, demonstrating the volta.
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