His first feeling was that he was "chilled all over," but later he laughs to himself, saying "Napoleon, the pyramids, Waterloo, and a wretched skinny old woman, a pawnbroker that's a nice hash for Porfiry Petrovitch to digest!" He is hiding behind the vanity over his knowledge about the idea of "extraordinary" people when he is in actuality afraid of the consequences of his being found out. Rasko prefers to see himself as a steadfast person instead of a frightened one, so he puts on his bitter smile to shield himself from the reality of his feelings. Similarly, during his interview with Porfiry, he was indirectly proclaimed to be a murderer but was unaffected by the statement, as he thought "the details of the interview were of little consequence." By thinking this thought, he shows that he is trying to remain unaffected by Porfiry's words when actually he is in fact frightened. Also, he thinks Svidrigailov can provide him with "information, or a means of escape," but at the same time thinks "how sick he was of it all!" Rasko is showing again his attempt to act intellectual in the face of being convicted of murder, much like his idea about "extraordinary" people, when actually he is afraid, desperate, and tired of all the hardships he has endured. Many of the strangers that Raskolnikov meets causes him to mentally struggle, as he tries to avoid his true feelings with logical thinking.
In addition to Raskolnikov's attempt to ignore his true feelings towards the people whom he doesn't personally know, he also attempts to ignore his true feelings towards the people whom he becomes close to and his family. For example, when he was trying to decide whether to visit Razumihin for lessons and work, Raskolnikov says to himself, "That's not what I want now. It's really absurd for me to go to Razumihin- He tries to look at the idea logically, that the little money that he would make working with Razumihin would be useless, but in actuality he longs to see Razumihin for some sort of help.