Merriam-Webster‘s (online) dictionary defines insanity as

something utterly foolish or unreasonable

A friend of mine and I had a nice chata regarding crazy people, and our discussion ended with both of us somehow thinking that there are no absolutely sane persons in the world. True, there are those who are without a doubt in need of therapy or medication, but then there are those who just have their own bouts with insanity. Can any person really claim soundness of mind or a healthy mindset at all times? Hmmm.