YOU SAID:

A sound thought is a good thought, unless it is a bad idea.

INTO JAPANESE

健全な思考は、悪い考えでない限り、良い考えです。

BACK INTO ENGLISH

Sound thinking is a good idea unless it is a bad idea.

INTO JAPANESE

健全な考え方は、悪い考えでない限り良い考えです。

BACK INTO ENGLISH

A sound way of thinking is a good idea unless it is a bad idea.

INTO JAPANESE

それが悪い考えでない限り、健全な考え方は良いアイデアです。