YOU SAID:
if you judge a fish of its ability to climb a tree it will spend its whole life thinking its useless
INTO JAPANESE
あなたが木に登る能力のある魚を判断するならば、それはその役に立たないと考えてその生涯を過ごすでしょう
BACK INTO ENGLISH
If you judge a fish with the ability to climb a tree, it will spend its life thinking it is useless
INTO JAPANESE
あなたが木に登る能力を持つ魚を判断するならば、それはそれが役に立たないと考えてその人生を費やすでしょう
BACK INTO ENGLISH
If you judge a fish with the ability to climb a tree, it will spend its life thinking it is useless
That didn't even make that much sense in English.