“‘Why are your cheeks so starved and why is your face so drawn? Why is despair in your heart and your face like the face of one who has made a long journey? Yes why is your face burned from heat and cold, and why do D come here wandering over pastures in search of the wind?’” (p. 18). meaning

Ithink he was just weary of humans especially his creator

Adjective clauses  begin with words such as that, when, where, who, whom, whose, which, and why. an essential (or restrictive)  adjective clauseprovides information that is necessary for identifying the word it modifies. so for example*** wrong= i the man gave me direction. example right ( i the man who gave me the  direction.