According to a historical perspective, Jesus was a person who spread a thought, and it became a religion afterwards. In that case, Jesus was not a real god. The entire hierarchy of the religion could not be all from himself, in other words, the era before Christian exist, there were already some fragments of ideas happened, and those comtributed the claim to be god of Jesus. Nevertheless he should realize the authenticity of that, although the logical and scientific education was rare in that year. So I think he was both a Lunatic and a Liar.