אִם הַקִּצּוּר יַסְפִּיק, הֲרֵי הָאֲרִיכוּת שְׁגִיאָה

ביטוי (אנגלית)

If the short version is sufficient, then the longer version is a mistake.

הגדרה (אנגלית)

There is no reason to speak or write superfluously when being more succinct is sufficient. / Brevity is the soul of wit.

(Rabbi Moshe ibn Ezra)