It's a ridiculous question, of course. But the question was raised some time ago by someone dear to me so I've been giving it some thought. I'm intelligent and wise far beyond my years. Far beyond my era, frankly. I posses no problems with my perceptions of reality. I don't self-medicate or inebriate myself in any way. I've only gotten intoxicated to any decent extent two or three times in my life. I've never hallucinated before. I thought I did at one point while I was depriving myself of sleep but the more I think about it the more it seems like it was a microsleep. I'm analytical to a fault. I have great empathy for a lot of things, both abstract and practical. To the point that I've managed to exploit it in order to control myself better. More efficiently. Indeed, I have an intimate understanding of how to influence myself. Above all else, I don't allow myself to deluded by ideology, religon or other unfounded beliefs. As far as I can tell I'm not insane. Quite the opposite. I could very well be one of the sanest individuals alive, TBH.