Final answer:
In Sonnet 116, Shakespeare uses personification to portray Love as immune to the changes and ravages of Time, underscoring the theme of love's constancy and permanence.
Step-by-step explanation:
In line 9 of Sonnet 116, William Shakespeare uses the phrase "Love's not Time's fool" to emphasize the theme that true love is immutable and eternal and does not change with the passage of time or circumstances.
This use of personification gives human attributes to Love and Time, suggesting that although Time has the power to change many things, it cannot alter the essence of genuine love.
The metaphor also continues the idea introduced earlier in the poem that love is a constant and unchanging 'star' to every wandering bark, serving as a guiding point that is unwavering despite life's storms and stresses.