Answer: Two character traits that the narrator demonstrates are <u>insanity</u> and <u>paranoia.</u>
Explanation:
In this short story written by Edgar Alan Poe, the narrator wants to assure us that he is sane, although he has committed a murder. However, it very soon becomes clear to the readers that he is <u>insane</u>. He is obsessed with his roommate's evil eye, which is why he kills him:
<em>"I undid it just so much that a single thin ray fell upon the vulture eye … but I found the eye always closed; and so it was impossible to do the work; for it was not the old man who vexed me, but his Evil Eye."</em>
After killing his roommate, the narrator chops him up. He, however, becomes <u>paranoid</u>, convinced that the dead man's heart is still beating. When the police arrives, he hears a heart beat, and assumes that they can hear it too. He believes that they know his secret and thus confesses to the police:
<em>"Almighty God! --no, no! They heard! --they suspected! --they knew! --they were making a mockery of my horror!-this I thought, and this I think. But anything was better than this agony! Anything was more tolerable than this derision!"</em>