Lemath you won't get anywhere focusing on his delusional content or trying to talk him out of it or "talk sense into" him about it. What you need to do is focus on the symptoms themselves, particularly the day to day things -- how he is not sleeping, how his thoughts are racing, how he is crying so easily, edgy and sensitive, how he is eating erratically (if that's the case), etc. By focusing on these things you can gently help him to see that these things are causes of stress and personal distress for him, and that if his goal is to end world hunger he cannot have these troublesome things getting in the way. Arrange a visit with a pdoc (psychiatrist) you have contacted ahead of time for him and get him checked out. Even if you don't follow this idea, you HAVE to call a psych doc, OK? You canNOT deal with this by yourself!!! I'm sure you know that!!!