How we cite our quotes:
While Arnoux was searching his pockets for money, Frederick stretched out towards the cap his closed hand, and then, opening it in a shamefaced manner, he deposited in it a louis d'or. (1.1.37)
From the moment he meets Madame Arnoux, Frederick is trying to impress her with the Benjamins. Here, he manages to beat Arnoux to giving the performer money. But of course, that's just the beginning.
They spoke of what they would do later, when they had left college. First of all, they would set out on a long voyage with the money that Frederick would take out of his own fortune on reaching his majority. (1.2.9)
Deslauriers and Frederick have big plans together. For one, they'll travel the world together on Frederick's dime—an idea that never come to be. Bummer. Though we can't say they're surprised.
But, as he intended to become a candidate at a later period for a professor's chair at the school, and as he had no money, Deslauriers accepted the post of principal clerk in an attorney's office at Troyes. (1.1.15)
Deslauriers is one of the few characters who has very little access to money—and therefore to society. Because he has so few resources, he's forced to move to Troyes, instead of to Paris as planned. What's the big deal about Paris anyway?