// Perhaps Jesus was a liar and delusional... but we have no historical evidence for or against this. //
If he claimed he was the son of god, and you don't believe in god, then you must believe he was either a liar or delusional, albeit with some good things to say about people being nice to each other.
If there's no historical evidence he claimed he was the son of god, then there's effectively no evidence he said any of the things he said.
Any way you cut it, it doesn't make alot of sense.