He cares only about filthy lucre.
filthy lucre
idiomMoney, especially if obtained dishonestly.
Origin
disputed originFrom filthy + lucre, which appears in the Tyndale Bible, and four times in the King James Version of the Bible, as a calque of Ancient Greek αἰσχρόν κέρδος (aiskhrón kérdos) and related terms such as αἰσχροκερδής (aiskhrokerdḗs, “[a person] given to filthy lucre”): see the quotations and Citations:filthy lucre.
The politician was accused of accepting bribes, clearly prioritizing filthy lucre over his public duties.
The novel explores how the protagonist sacrificed his integrity and reputation in a desperate, lifelong pursuit of filthy lucre.