YOU SAID:

I know one thing it is that I know nothing.

INTO JAPANESE

私は何も知らないということを知っています。

BACK INTO ENGLISH

I know I don't know anything.

INTO JAPANESE

何も知らないわ。

BACK INTO ENGLISH

I Don't know anything.

INTO JAPANESE

何も知らないわ。

BACK INTO ENGLISH

I Don't know anything.