You have to exclude those causes that generate moral hazard problems for the insurance to work; otherwise, the whole system will fail.

你得将一些,有可能会产生道德风险的情况,排除在外;,否则，整个保险系统就失效了。

耶鲁公开课 - 金融市场课程节选

"The failure of Greece, " he said, "would be the failure of all Europe... it is not possible to let Greece fail, for moral and economic reasons".

BBC: The Greek conundrum

In this regard, some particularly thorny issues are raised by the existence of financial institutions that may be perceived as "too big to fail" and the moral hazard issues that may arise when governments intervene in a financial crisis.

FORBES: Reducing Systemic Risk

The sorry consequences of letting Lehman Brothers fail, which was intended to discourage moral hazard, showed that the middle of a crisis is not the time to get tough.

ECONOMIST: Financial economics