reinforce the idea that unanticipated pleasures are the most enjoyable ones.
William Butler Yeats wrote the poem “The Song of Wandering Aengus,” and it was published when he was in his early 30s.
Answer: he
The two things that are being compared here is the crack of a bone and slicing through each nerve with a hole blade. The effect of the comparisons is to get the reader to visualize it actually happening.