how and why does Charlie's opinion of Dr. Nemur change?

As Charlie's intelligence improves, he begins to resent Dr, Nemur's condescending attitude towards him. On June 5. Charlie writes that his relationship to Nemur "is becoming increasingly strained." He is offended by Nemur's "constant references to (Charlie) as a laboratory specimen," Charlie feels as if Nemur does not even consider him a human being.

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