Post by Soheila Sharegh.
Actually, the center of any finite volume is an infinitesimally small point. And there are many centers you could choose: geometric center, center of mass, center of mass-energy, or... the center of the observable universe. Considering the concept of a light cone, and that the speed of light in a vacuum is a universal constant, the center of the observable universe is, in fact, always you.
In Torah, we see both: "I am but dust and ashes," (Bereishis 18:27) and "For my sake was the Universe created." (Sanhedrin 37a, end) The Rebbe Reb Simcha Bunim of Pshischa was famous for uniting the two concepts. He taught: Everyone must have two pockets, with a note in each pocket, so that he or she can reach into the one or the other, depending on the need. When feeling lowly and depressed, discouraged or disconsolate, one should reach into the right pocket, and, there, find the words: "For my sake was the Universe created."
But when feeling high and mighty one should reach into the left pocket, and find the words: "I am but dust and ashes."
