Erst kommt das Fressen, dann die Moral. (Bertolt Brecht)
Loosely translated, "First feed, then scruple."
Something similar in Horace. Quaerenda pecunia primum est; virtus post nummos. (Horace, Epistles I, 1, 53) Money is to be sought first of all; virtue after wealth. Or, loosely translated, cash before conscience.