הִיזָּהֵר עֲשׂוֹת סְפָרִים הַרְבֵּה

ביטוי (אנגלית)

Be careful not to make too many books.

הגדרה (אנגלית)

In a word of advice: Don't talk too much about the language.

("And besides this, my son, I have learned that making many books has no end, and much talk wears out the flesh" - Ecclesiastes 12:12)