I am not what I am.
this sentence pretty much sums up the whole "twelfth night" concept, as it implies revelation hence the disguise context that this play is all about. It goes straight to the point without obviously doing so. I mean, this sentence fits every life situation so well as it has multiple meanings, such as "I am not who I am from the inside" meaning I am acting and I am not my usual self or "I am not who I am from the outside" meaning I'm literally wearing a costume and pretending to be someone I'm not, physically. this sentence sums it up really well in the meaning that it's so familiar that we could easily say that every single day of our lives is a "twelfth night".
i just find myself in this sentence since I'm majoring in Psychology, and i just know how, as social beings, we tend to wear a mask once we wake up, we tend to lose our sense of authenticity and just keep on our happy cheery faces, all the while neglecting our truths.