Money is always to be found when men are to be sent to the frontiers to be destroyed: when the object is to preserve them, it is no longer so.

[On en trouve [l’argent] toujours quand il s’agit d’aller faire tuer des hommes sur la frontière: il n’y en a plus quand il faut les sauver.]

Voltaire (1694-1778) French writer [pseud. of Francois-Marie Arouet]

Questions on the Encyclopedia [Questions sur l’Encyclopédie], “Charity [Charité]” (1770) [tr. Fleming]
    (Source)

Referring to the scandalous conditions at the Hôtel Dieu charity hospital in Paris.

(Source (French)). Subsequently folded into later editions of the Philosophical Dictionary [Dictionnaire Philosophique].