If you take ALL that Jesus said, rather than just pick the bits you like, then you can't ever imagine he was just a good teacher. Even the single claim like "unless you believe that I am he you will die in your sins" John 8:24 This cancels out all the good teaching UNLESS he was who he said he was.
As Andrew says above, you have four ways to respond to Jesus revelation of who he is.
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Andrew
http://lipsforchips.blogspot.com/2011/03/messiah-or-very-naughty-boy.html
May or may not be useful but my meanderings almost inevitably ended up at CS Lewis' mad, bad or god trilemma. I think that is a good way to go when considering this question... If you did go down this route it might be interesting to go further and respond to the criticism of Lewis' construct, that the biblical Jesus isn't historical (i.e. the claim that the trilemma is false, and there are 4 choices - Liar, Lunatic, Lord or Legend). Not given it much thought, but i think there must a pretty solid response that can be constructed to show that "legend" really doesn't carry the same weight as an option for consideration - when looking at Gospel correlation, historical evidence outside of the bible, early gospel manuscripts to show that Jesus' claims of Deity were not later additions, etc.