YOU SAID:

the longer the better is what my grandfather used to say

INTO JAPANESE

私のおじいちゃんが言っていたことがより長くなるほど

BACK INTO ENGLISH

As my grandpa was saying any longer

INTO JAPANESE

もはや私のおじいちゃんが言っていた

BACK INTO ENGLISH

No longer had to say my grandpa

INTO JAPANESE

もはや私のおじいちゃんを言わなければならなかった

BACK INTO ENGLISH

No longer had to say my grandpa