Bede, on Prov 18:11

“The substance of the rich man is the city of his strength, and as a strong wall compassing him about.”

“The wealth of the rich is his strong city, etc. Earthly wealth cannot always defend; indeed, many are captured or killed because of riches. Thus Ecclesiastes also says, Riches kept to the harm of their owner; for they perish in a terrible affliction. Therefore, it is better understood to praise the wealth of virtues, with which whoever abounds wards off all the plots of enemies as with an impregnable wall.”

Imported from an open dataset — not yet checked against the printed edition.