Final answer:
The statement about John Milton using his blindness to illustrate grief in 'On His Deceased Wife' is false, as the excerpts provided do not reference Milton's work or personal blindness.
Step-by-step explanation:
The statement that John Milton uses his own physical infirmity of blindness to illustrate the depth of his personal grief in "On His Deceased Wife" is false.
The provided passages do not reference John Milton's poem or his personal afflictions.
Instead, these excerpts seem to discuss themes of human suffering, mortality, and emotional anguish from various literary works by different authors, including the struggle with physical and psychological turmoil that characters undergo.
Notably, the struggle with blindness is explicitly mentioned, which connects to Milton's own blindness, but this affliction is described in the context of characters in different narratives.