The body is mortal, but he who dwells in the body is said to be immortal and immeasurable – Bhagavad Gita

(From Hindu-blog.com)

When the senses contact sense objects, we experience cold or heat, pleasure or pain. These are fleeting; they come and go. Bear them patiently.

The person who is unaffected by the sense objects, who is the same in pleasure and pain, is truly wise and fit for immortality. Assert your strength to realize this.

The impermanent has not reality; reality lies in the eternal. Those who have seen the boundary between these two have attained the end of all knowledge.

Realize that which pervades the universe and is indestructible; no power can affect this unchanging, imperishable Reality.

The body is mortal, but he who dwells in the body is said to be immortal and immeasurable.
Bhagavad Gita