A analysis of the character of Sydney Carton in A tale of tw

Are you handing in a report? If you are, you should do some research on google or something.
I found the following analysis from Wikipedia. I wouldn't advise to use it unedited.
Character analysis
The most common interpretation of Sydney Carton is one in which he is the selfless benefactor of others. Having grown weary of his life of self-indulgence, he decides to sacrifice it in order to save the life of Charles Darnay, who had shown himself more worthy of living it than Carton had his own. However, a more self-centered interpretation of Carton also exists. In this interpretation, Carton regrets his being regarded as a ne'er-do-well for having wasted his life, and chooses to give it up, hoping that his past will be forgotten and that he will be remembered for his sacrifice. This interpretation suggests that Carton is more concerned with his reputation than with the well-being of Darnay and his family.
A sign of Carton's selfishness is seen when he visits Lucie Manette alone, and tells her of his disappointment with his life. Lucie asks Carton if she can possibly help him, but he responds that he has tried to change his ways and failed, and that she can be of no assistance to him. If he believes that she is not able to help him, then it would seem pointless for him to trouble her with his problems. His motivation for talking with her is not to find help from her, but simply to gain her sympathy. He shows further lack of consideration when he asks Lucie to tell no one, not even her husband, what he has told her. In doing this, he is obligating her to give him a place of special status in her life, one which even her husband does not hold, and one which he knows he does not deserve. It is Carton's dual character, one that is both selfless and sensitive, as well as self-pitying and inconsiderate, that makes him one of literature's most fascinating characters.
Another possible interpretation of Carton's actions is that he is a (reasonably) self-aware functional alcoholic. He knows that even with Lucie Manette's influence he will be unable to give up drinking, but that his abilities may be of use to her in the future. This theory of Sydney's view of himself is supported in the following quote:
* "Sadly, sadly, the sun rose; it rose upon no sadder sight than the man of good abilities and good emotions, incapable of their directed exercise, incapable of his own help and his own happiness, sensible of the blight on him, and resigning himself to let it eat him away." (Book 2, Chapter 5)