Benzinga and Yahoo Finance LLC may earn commission or revenue on some items through the links below. Warren Buffett has quoted his longtime business partner Charlie Munger more times than he can count. But one of the most memorable lines? It had a rhythm — and a warning. "My partner Charlie says there is only three ways a smart person can go broke: liquor, ladies and leverage," Buffett said during a 2018 CNBC interview. Then came the twist: "Now the truth is — the first two he just added because they start ...