1.2.133-163
Hamlet does not express his mourning and feelings (lines 133-139) because Claudius says it is "unmanly" to grieve (line 98). Why does Hamlet listen to Claudius? Why doesn't he express what he feels?

Hamlet does not express how he feels because he is realistic, for he knows he can not change Claudius' new kingship and must appease him as a result. However, as demonstrated in his clever and sarcastic opening remarks(69), Hamlet can say things that pass over Claudius' and Gertrude's heads. Because Hamlet is more intelligent than they are, he may be able to manipulate Claudius in the future by pretending to listen to and obey him (similar to Invisible Man's grandfather's advice! - "undermine with yesses"). One of the responses mentioned Hamlet does not completely conceal his feelings, but exposes them to Horatio. This gives the audience insight into their open relationship, and reveals Hamlet is not so guarded that he can not open up to others. Although Hamlet feels comfortable confiding with Horatio, he does not tell him his consideration of suicide. Hamlet's overall repression of his true feelings parallels the question, "When have I struggled to abide by the values I claim to possess?" Hamlet's struggle with voicing not only his emotions, but his strong opinions about Claudius' and Gertrude's marriage may result in an explosion or act of rebellion against Claudius later in the play.