Esse oportet ut vivas, non vivere ut edas.
(Latin Esse = “to eat” (German, essen), conjugated edo, edis or es, edit or est, edimus, editis or estis, edunt in the present active. The subjunctive is edam, edas, edat, edamus, edatis, edant. Vivas is also subjunctive, ut (so that) demands it. The verb oportet is impersonal, used in the third person singular only, meaning “it is necessary”.)
This famous proverb by Cicero was also quoted by the French playwright Molière in his piece L’Avare (1668): On doit manger pour vivre, et non vivre pour manger.