YOU SAID:

Humankind cannot gain anything without first giving something in return.

INTO JAPANESE

人類は、最初に何かを返すことなしに何も得ることができません。

BACK INTO ENGLISH

Mankind cannot get anything without first returning something.

INTO JAPANESE

人類は最初に何かを返さなければ何も手に入れることができません。

BACK INTO ENGLISH

Mankind cannot get anything without first returning something.