YOU SAID:

they need not always try to maximize their own happiness in action whenever possible.

INTO JAPANESE

彼らは、可能な限り、行動の中で自分の幸せを最大化しようとする必要はありません。

BACK INTO ENGLISH

They do not have to try to maximize their happiness in their actions as much as possible.

INTO JAPANESE

彼らは彼らの行動において彼らの幸せを可能な限り最大化しようとする必要はありません。

BACK INTO ENGLISH

They do not have to try to maximize their happiness in their actions as much as possible.