What do we really know?

[Julio Juliopolis]

DoktorGreen wrote:
Good contributions JJ! If Depak used English as a firts language.. yada yada. Let me rephrase the title question. Is that allowed?!?

Excluding beliefs, how many things can you say you really know are true?

Thanks DoktorGreen,

Answering your question is getting more and more confusing.
Everything is true. 
Nothing is true.
I don't know, why don't you ask someone who exists?!