VULNERABILITY • FREE TRANSLATOR.ORG • Definition of Vulnerability

... the world ever recurs to that moderate degree of sanity and civilization which shall permit wars, but strive to regulate them in the interest of humanity this untrustworthiness of the aircraft's aim will compel some form of international regulation, just as the vulnerability of the submarine will force the amendment of the doctrine of visitation and search. But neither problem can be logically and reasonably solved in the middle of a war. And so, while the German violation of existing international law had the uncomfortable ...

— Aircraft and Submarines - The Story of the Invention, Development, and Present-Day - Uses of War's Newest Weapons • Willis J. Abbot

... some were neither one nor the other. Health, strengths and soundness of the senses were in accordance with nature; sickness weakness and mutilation were contrary to nature, but such things as the fallibility of the soul and the vulnerability of the body were neither in accordance with nature nor yet contrary to nature, ...

— A Little Book of Stoicism • St George Stock