Never be satisfied with yourself, or you will fall behind others.

永远不要自我满足，否则你会落后于别人。

youdao

Xiaoming always asks why and he'll never be satisfied until he knows everything.

小明老爱问为什么，老爱打破沙锅问到底。

《新英汉大辞典》

The more the better and they'll never be satisfied.

他们也说。更多更好的他们将不满足。

youdao

"Therefore, I will never fix my architectural style and never be satisfied with my works, " he said in a statement.

BBC: Stadium for The World Games 2009 in Kaohsiung

And though I will never be satisfied while people are out of work and our financial system is weakened, we can be confident that the storms of the past two years are beginning to break.

WHITEHOUSE: President Obama on the Anniversary of Lehman's Fall

But, even if such money is found through charges, the lesson of history is that demand for health care will never be entirely satisfied.

ECONOMIST: Bevan’s baby hits middle age | The