Knowledge knows no bounds.

知识是没有穷尽的。

《新英汉大辞典》

Their avarice knows no bounds; you can never satisfy them.

他们贪得无厌, 你永远无法满足他们。

《新英汉大辞典》

Education knows no bounds.

教育没有任何限制。

youdao

Each Asura is a genius in their own minds, and their ego knows no bounds.

FORBES: 'Guild Wars 2' Review - Part Four: Having Fun With The Asura

Mr Attwood welcomed the judgement and said "the economic benefits of tourism in the north potentially knows no bounds".

BBC: Giant's Causeway resort row: Judge backs golf plan

Lib Dem faith in the beneficence of public-sector producers knows no bounds.

ECONOMIST: Bagehot