The Buddha is famous for declaring there’s no self. We are born, we grow into adulthood and then we pass away. Some think we restart that process in the next life. The Buddha says: one life or many, there’s no rock to tether the ship of existence.
Having accounted for the impermanence of time, the Buddha went silent. Space plays no part in his calculations. Sure, there’s no single self over time, but what about having the same self in space? Are we the same person in every direction?
Every one of us experiences ourselves from the inside-out. We refer to ourselves as “I.” It’s commonly believed that we have unique access to that Me-self, an experience of being me that no one else has, that there’s an inner door to a secret chamber that can only be opened by one key. Who else can tell me that I am in pain besides me?