Gilgamesh, where are you roaming?
You will never find the eternal life
that you seek. When the gods created mankind,
they also created death, and they held back
eternal life for themselves alone.
Humans are born, they live, and then they die,
this is the order that the gods have decreed.
But until the end comes, enjoy your life,
spend it in happiness, not despair.
Savor your food, make each of your days
a delight, bathe and anoint yourself,
wear bright clothes that are sparkling clean,
let music and dancing fill your house,
love the child who holds you by the hand,
and give your wife pleasure in your embrace.
That is the best way for a man to live.

Epic of Gilgamesh (c. 2100–1200 BC) Sumerian myth

Tablet 10, col. 3 [Siduri] [tr. Mitchell (2004)]
    (Source)

Said by Siduri, the tavern keeper, to Gilgamesh, who was seeking for immortality after Enkidu's death. In some versions, this is said by the ferryman Urshanabi.

Other translations:

Why, O Gish, does thou run about?
The life that thou seekest, thou wilt not find.
when the gods created mankind,
Death they imposed on mankind;
Life they kept in their power.
Thou, O Gish, fill thy belly,
Day and night do you rejoice,
Daily make a rejoicing!
Day and night a renewal of jollification!
Let thy clothes be clean,
Wash thy head and pour water over thee!
Care for the little one who takes hold of thy hand!
Let the wife rejoice in thy bosom!
[tr. Jastrow/Clay (1920)]

Gilgamesh, where are you hurrying to? You will never find the life for which you are looking. When the gods created man they allotted to him death, but life they retained in their own keeping. As for you, Gilgamesh, fill your belly with good things; day and night, night and day, dance and be merry, feast and rejoice. Let your clothes be fresh, bathe yourself in water, cherish the little child that holds your hand, and make your wife happy in your embrace; for this too is the lot of man.
[tr. Sandars (1960)]

Gilgamesh, where are you wandering? The life that you are seeking all around you will not find. When the gods created mankind they fixed Death for mankind, and held back Life in their own hands. Now you, Gilgamesh, let your belly be full! Be happy day and night, of each day make a party, dance in circles day and night! Let your clothes be sparkling clean, let your head be clean, wash yourself with water! Attend to the little one who holds onto your hand, let a wife delight in your embrace. This is the [true] task of mankind.
[tr. Kovacs (1989)]

[...] Remember always, mighty king, that gods decreed the fate of all many years ago. They alone are let to be eternal, while we frail humans die as you yourself must someday do. What is best for us to do now to sing and dance. Relish warm food and cool drinks. Cherish children to whom your love gives life. Bathe easily, in sweet, refreshing waters. Play joyfully with your chosen wife. It is the will of the gods for you to smile on simple pleasure in the leisure time of your short days.
[tr. Jackson (1997)]

[...] But you, Gilgamesh, let your belly be full,
enjoy yourself always by day and by night!
Make merry each day,
dance and play day and night!
Let your clothes be clean,
let your head be washed, may you bathe in water!
Gaze on the child who holds your hand,
let your wife enjoy your repeated embrace!
[tr. George (1999)]

What you want, you cannot have. You will not find a life that does not die. When maknind was created by the gods, they kept undying life for themselve; they gave death to man.
So, Gilgamesh, fill your stomach. Enjoy yourself. Take pleasure every day and every night in every way you can. Play. Dance. Refresh yourself with baths. Wash your hair. Put on clean clothes. Take your child's hand in yours and take your wife on your lap. That is life.
[tr. Harris (2001)]

Thy constant grief shall never cease; nor mild
Thy life shall ever be if thou persist
Upon this foolish quest; thy deeds resist
The will of heaven's way's the gods bestowed
On us the ways of death with sorrow owed
To every living man; the gods reserved
Eternal life for their delight; -- unnerved
By this? This is the scheme of things, -- accept
Thy lot; enjoy the sun, thy children kept
In later years, and fleeting life today;
Remove thy needless burden; come what may.
[tr. Watson (2023)]