他做这事完全出于好意。

He did it all out of kindness.

《新英汉大辞典》

他帮你完全出于好意。

He helped you out of pure kindness.

youdao

她发现，那些如洪水般涌向单身女性的善意建议虽然完全出于好意，但不仅没有用，还令单身女性极度反感。

What she found was a deluge of well-meaning advice being issued to singles that, while offered with the best of intentions, not only wasn't working but was making singles' skin crawl.

youdao

The aim of this, that I think is a good aim, it's an educational project, and I'm hoping you'll help us with it.

这完全出于好意,这是个教育项目,我也希望你们也能尽己所能把它做好

耶鲁公开课 - 博弈论课程节选