越是在知识和经验达不到的地方和时候,信念、信仰和理想就越起作用。英语怎么说~~

One's belief,faith and ideal take/play/have a more influencing role where and when his knowledge as well as experience fail to reach.

one's,his:表示泛指，每每这种情况下。
take/play/have a role 起作用，有影响
influencing:对...起作用的，支配和左右...的
as well as[前面使用了and，使句子避免过多重复]
fail to do:没能够做到，做...失败。

Belief,faith and dream work better where knowledge and experience is more lack.