What impression do you form of Prince of Morocco from his speech ?

Morocco is prideful and vain: the thinks literally which was his mistake. Morocco is the first suitor who tries to choose the correct casket and win Portia in marriage. He reads the inscription on the gold casket—"Who chooseth me shall gain what many men desire" (II.vii.37)—and debates with himself that "what many men desire" is certainly Portia. He concludes that since she is much desired by men everywhere, the lead and silver caskets are beneath her dignity; he chooses the gold casket. When he opens it he discovers a death's-head and a scroll that reminds him "All that glisters is not gold ..." (II.vii.65). Like Arragon, Morocco has agreed never to reveal his choice, never propose marriage to another maid, and leave immediately upon failing to choose correctly. Unlike Arragon, he seems to value Portia above himself. So, when Portia says "Let all of his complexion choose me so" (II.vii.79) her dismissal of him seems exceptionally cruel.