Patience serves us against insults precisely as clothes do against the cold. For if you multiply your garments as the cold increases, that cold cannot hurt you; in the same way increase your patience under great offences, and they cannot hurt your feelings.
Leonardo compares patience with clothing that protects the body from cold. Just as additional layers reduce the effect of worsening weather, greater patience can reduce the emotional impact of insults or offences. The comparison presents patience as a form of protection that can be strengthened when circumstances become more difficult.
The statement places emphasis on a person’s response rather than on controlling the behaviour of others. Insults may still occur, but their power to cause distress can be limited by developing restraint and emotional steadiness. Patience, in this sense, does not require approval of offensive behaviour; it concerns how far that behaviour is allowed to govern one’s feelings and actions.
The quote can be applied to personal disagreements, criticism and other situations involving provocation. It encourages measured responses and suggests that greater self-control can help prevent hostility from producing further emotional harm or unnecessary conflict.