Do not speak in the ears of a fool, for he will despise the wisdom of your words
There is no point in trying to speak words of sense to a fool, for in any case he will prefer to mock what you have said.
("Do not speak in the ears of a fool, for he will despise the wisdom of your words" – Proverbs 23:9)
Translation
Expression (Hebrew)
בְּאָזְנֵי כְסִיל אַל תְּדַבֵּר, כִּי יָבוּז לְשֵׂכֶל מִלֶּיךָ
Definition (Hebrew)
אֵין טַעַם שֶׁתִּתְאַמֵּץ לְדַבֵּר דִּבְרֵי טַעַם בְּאָזְנֵי טִפֵּשׁ כִּי בְּכָל מִקְרֶה הוּא יַעֲדִיף לִלְעֹג לִדְבָרִים שֶׁאָמַרְתָּ.
("בְּאָזְנֵי כְסִיל אַל תְּדַבֵּר, כִּי יָבוּז לְשֵׂכֶל מִלֶּיךָ"- מִשְׁלֵי כג ט)