•My duty [see Glossary] of fidelity involves acting in
conformity not with the admissible meaning of certain
words but with the meaning that I know the promisee
took them to have;
•My duty of veracity is not to utter words that would
give beliefs corresponding to mine to any hearers who
understood me according to common usage, but to
utter words that I believe will have this effect on the
hearers that I actually have.