YOU SAID:

Someone who has never lost anything has never learned anything new

INTO JAPANESE

何も失ったことのない人は、新しいことを学んだことがない。

BACK INTO ENGLISH

People who have never lost anything have never learned anything new.

INTO JAPANESE

何も失ったことのない人は、新しいことを学んだことがありません。

BACK INTO ENGLISH

People who have never lost anything have never learned anything new.