Tā cháng yǐnyòng wéi fù bù rén, wéi rén bù fù lái pīpíng shèhuì xiànxiàng.
He often quotes 'the rich aren't kind and the kind aren't rich' to criticize social phenomena.
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From 孟子·滕文公上: 阳虎曰:『为富不仁矣,为仁不富矣。』 - Mencius quotes the minister Yang Hu making the observation. Used in classical political philosophy to argue that the pursuit of wealth and the pursuit of virtue tend to be in tension. The first half 为富不仁 (wéifùbùrén) circulates as a standalone four-character idiom much more often than the full pair.
usage
Often used as social critique. The shorter half 为富不仁 is far more common in everyday speech; the full version is reserved for essays, classical references, and rhetorical effect.