על החוקים לפרטיהם, ספר ד כ״חOn the Special Laws, Book IV 28
א׳
1[149] Another commandment of general value is “Thou shalt not remove thy neighbour’s landmarks which thy forerunners have set up.” Now this law, we may consider, applies not merely to allotments and boundaries of land in order to eliminate covetousness but also to the safeguarding of ancient customs. For customs are unwritten laws, the decisions approved by men of old, not inscribed on monuments nor on leaves of paper which the moth destroys, but on the souls of those who are partners in the same citizenship.
ב׳
2[150] For children ought to inherit from their parents, besides their property, ancestral customs which they were reared in and have lived with even from the cradle, and not despise them because they have been handed down without written record. Praise cannot be duly given to one who obeys the written laws, since he acts under the admonition of restraint and the fear of punishment. But he who faithfully observes the unwritten deserves commendation, since the virtue which he displays is freely willed.