“Say yes when you mean yes and no when you mean no. Anything beyond that is from the evil one. “ Promise-keeping is the foundation of personal and social existence. If we cannot trust people to keep their word, then there is no basis for civil law, for business dealings, for personal friendships, or for family life. For that reason, we routinely expect people to swear that they are telling the truth. How can I change my life in this regard? How can I improve my level of trust?