That man has reached immortality who is disturbed by nothing material.

Summary

This quote suggests that true immortality lies in the ability to transcend worldly, materialistic concerns. It implies that when one remains unaffected by material possessions or desires, they are able to attain a higher state of being, free from attachment and dissatisfaction. By detaching from the material realm, one can find a sense of inner peace and eternal tranquility, ultimately leading to a state of immortality - not in a literal sense but in terms of cultivating a lasting spiritual consciousness that is unshaken by the transient nature of the physical world.