Frogboy - Of course, my neighbors think I'm insane.
look, if you lived in a "sensible" country then you wouldnt have this problem.
plan a)
become very rich. rich people are never crazy, they are mearly excentric
plan

(my favourate)
get documents to prove you are sane.
step one is to find a suitable genius to acredit you. personally i always use myself, since i am not convinced anyone else really apreaciates me properly.
once you have the document proving you are a genuis (produced by the acrediting genius), you are qualified to judge your own sanity, and to produce a certificate saying so.
pink highlighter is always a good tool for creating such a certificate, since it makes it more noticable, so forstalling all these baseless suggestions of insanity.