"I tell you, friend, that it is not possible by traveling to know or see or reach a far end of the cosmos where one does not take birth, age, die, pass away, or reappear.
But at the same time, I tell you that there is no making an end of suffering and stress without reaching the end of the cosmos.
Yet it is just within this fathom-long body, with its perception and intellect, that I declare that there is the cosmos, the origination of the cosmos, the cessation of the cosmos, and the path of practice leading to the cessation of the cosmos."
~ Shakyamuni Buddha, in the Rohitassa Sutta (SN 2.26)
translated by Thanissaro Bhikkhu