Who Are You?

You are not the one who were yesterday nor will you be tomorrow who you are now. Let's consider it. Are there you and I in this very world? ''Nothing lasts forever,'' taught the Buddha. Only mind and matter are there in this world. When saying ''this'' about something pointing out, there is in essence no ''real this'' only ''that'' left. That is what we call all things not having known what and how things come out and pass away.
At every minute and second, mind and matter change without stopping, then how can there be permanent things, how can we say, if so, ''this'' that changes into ''that''? In relation with one another or more, neither I, my, mine nor myself and so on so forth can exist in this very world when we absolutely take all around us and beyond into consideration. You can extend your way of thinking dealing with this and that, based on the teachings preached by the Lord Buddha.
All that arises is subject to change and cease. There was neither everlasting thing nor is at present nor will be in future in the light of the Ultimate Truth. Not ''You'' nor ''I''. Only Mind and Matter at every time. That is why you are not you as you think. So, who are you?