ભણ્યેગણ્યે તે ઘોડે ચડે, ન ભણ્યે તે આગળ દોડે.

bhaṇyēgaṇyē tē ghōḍē caḍē, na bhaṇyē tē āgaḷa dōḍē.

Literally: The educated and learned mount the horse, while the uneducated run ahead.
What it means: Even the most educated and capable individuals are prone to making mistakes.
The English proverb Shah set beside it: A good marksman may miss.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) · 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.