YOU SAID:

It's what you don't know that you don't know that will kill you.

INTO JAPANESE

それはあなたがそれを殺すことを知らないことをあなたが知らないことです。

BACK INTO ENGLISH

It is that you do not know that you do not know to kill it.

INTO JAPANESE

あなたはそれを殺すことを知らないことを知らないということです。

BACK INTO ENGLISH

You do not know that you do not know to kill it.

INTO JAPANESE

あなたはそれを殺すことを知らないことを知りません。

BACK INTO ENGLISH

You don't know that you don't know killing it.

INTO JAPANESE

あなたはそれを殺すことを知らないことを知りません。

BACK INTO ENGLISH

You don't know that you don't know killing it.