Preoccupation with money is the great test of small natures, but only a small test of great ones

[L’intérêt d’argent est la grande épreuve des petits caractères, mais ce n’est encore que la plus petite pour les caractères distingués.]

Nicolas Chamfort (1741-1794) French writer, epigrammist (b. Nicolas-Sébastien Roch)

Products of Perfected Civilization [Produits de la Civilisation Perfectionée], Part 1 “Maxims and Thoughts [Maximes et Pensées],” ch. 2, ¶ 164 (1795) [tr. Mathers (1926)]
    (Source)

(Source (French)). Alternate translations:

Money is the greatest concern for small characters, but is nothing but the smallest for great characters.
[E.g. (1923)]

Concern for money is the great test of small natures; but is scarcely a test at all for those who rise above the ordinary.
[tr. Merwin (1969)]

Pecuniary gain is the great test for those of weak character, but for those wit out-of-the-ordinary characters it is of the slightest importance.
[tr. Pearson (1973)]

The desire for money can go very far in proving that a person has a petty character, but it has little to say about a persons sincerity.
[tr. Siniscalchi (1994)]

Weak characters think money all-important; for any well-bred person, it's a very minor concern.
[tr. Parmée (2003), ¶ 129]