It is not enough to act in good faith. We also need to act reasonably.

做事只有好心是不够的，还要有理智。

youdao

To achieve good faith, education alone is not enough, we need system for guarantee.

诚信道德品质养成不仅需要道德教化，也需要制度保障。

youdao

To quote a source making an untrue claim in good faith is not enough: the claim itself must be true.

ECONOMIST: Politics

But the way copyright law works, good faith is not enough.

FORBES: CBS Blocks Production of 'Star Trek' Fan Film

Professor NOGUERA: Well I'm a man of faith too, but I think relying on prayer is probably not good enough here.

NPR: Roundtable: Rice, Rumsfeld in Iraq, 'United 93'