કાળા અક્ષરને કુટી મારે તેવા છે. છનું અર્ધ પણ જાણે નહીં.

kāḷā akṣaranē kuṭī mārē tēvā chē. chanuṁ ardha paṇa jāṇē nahīṁ.

Literally: Capable of thrashing black letters to death; does not even know half of six.
What it means: Said of an utterly illiterate and ignorant person.
The English proverb Shah set beside it: You may as well expect a cat to read.It is all Greek and Latin to me.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1921) · read from the scan by machine — the Gujarati itself is unchecked · English is machine-made and nobody has checked it yet

Heard it differently, or know we've got the sense wrong? Tell us — that is exactly the kind of correction this needs.