Translate the following English sentence to French:
"It would, in fact, be appropriate for a person not to have to work for 80 years if he is going to live to be 90 years of age, but to work for a period of 30 years if he is going to live to be 60 or 70."
En effet, une personne ne doit pas travailler quatre-vingts ans si elle en vit quatre-vingt-dix, mais trente ans si elle en vit soixante ou soixante-dix.