YOU SAID:

The things that I know are only the things that I know I don't know.

INTO JAPANESE

私が知っていることは、私が知らないことだけです。

BACK INTO ENGLISH

All I know is what I don't know.

INTO JAPANESE

私が知っているのは、私が知らないことだけです。

BACK INTO ENGLISH

All I know is what I don't know.