In the first passage, lexicographers are described as diligent and accomplished; they have a number of difficult and complex tasks to do. In the second passage, however, the word lexicographer seems to have a negative connotation, and a dictionary writer is compared unfavorably with a poet. This shift is likely because Johnson had to adjust his plan as he wrote his dictionary and thought that he had not met his lofty goals.
Answer:
There is within me (and with sadness I have watched it in others) a knot of cruelty borne by the stream of love, much as our blood sometimes bears the seed of our destruction, and at times I was mean to Doodle.
Explanation:
This was probably one of the saddest lines in the entire story. He is older when he says this thinking back on the memories of him and his brother.