Translation of "Eternally" in Spanish

The artist is eternally a boy.

El artista es un niño eternamente.

History is like a waltz, eternally following the three steps of war, peace and revolution.

La historia es como un vals, que sigue eternamente los tres pasos de guerra, paz y revolución.

Man has many wishes that he does not really wish to fulfil, and it would be a misunderstanding to suppose the contrary. He wants them to remain wishes, they have value only in his imagination; their fulfilment would be a bitter disappointment to him. Such a desire is the desire for eternal life. If it were fulfilled, man would become thoroughly sick of living eternally, and yearn for death.

El hombre tiene muchos deseos que en realidad no quiere satisfacer, y sería un malentendido imaginar lo contrario. Quiere que sigan siendo deseos, tienen valor únicamente en su imaginación, su cumplimiento sería una amarga decepción para él. Un deseo así es el deseo de la vida eterna. Si se cumpliera, el hombre llegaría a hastiarse de vivir eternamente, y anhelaría la muerte.