Is there honor in Eve?
First define what you mean by honor and then the answer will become obvious. Try reading what Wiki has to say about the meaning of honor
http://en.wikipedia.org/wiki/Honour"Honour is a code of behaviour that defines the duties of an individual within a social group. Margaret Visser observes that in an honour-based society 'a person is what he or she is in the eyes of other people'."
So if a group of players banded together to do massive scamming and theft, they are a society (within a larger society: the game) and their mutual scamming would be honorable within their group. Consequently if one of the group pulled a scam on another one within the group, it would be honorable to those within the group. To somone outside of their group they might be dishonorable, but only in comparison to a different set of social rules.
I think the original post actually mis-used the word "honor" in an attempt to ask whether his personal set of rules had a place within Eve. In that case the answer would be yes since it is a sandbox where any set of personal rules are perfectly fine. And if he finds a group of other players with similar behavior rules, they can form a small society within the larger society where their sense of honor matches each other. Or he can even play solo with a small society consisting of only himself.
Is there any particular set of personal or societal rules that are not considered acceptable within Eve? The answer is simply that any behavior is acceptable as long as a GM does not object. In life we have our personal belief system, peer acceptance, social behavior rules, social laws, religion and other behavior modifications. In a game such as Eve we have similar behavior modifications. We log in with our personal beliefs, we group with others to form a peer group, we have a perceived Eve players accepted behavior, GM "laws" and other behavior modifications. But the only one with teeth is the almighty power of God (the GM) looking over your logs. The rest are simply social behavior modifications and are able to be adopted or ignored.
Yes, there is a place for honor within Eve. Find a corp that fits your personal beliefs and be honorable within your corp. If they're scammers, liers and thieves, rip off the corp and laugh. If they try to teach and help newbies, find a newbie to mentor. Whatever your social group does, do it well and you have achieved an honorable game experience.