It is not necessarily to be understood in all cases that a direct unreserved promise means something conditional, so that there is a liability to being much deceived and grievously disappointed by all such promises.

A sound morality certainly demands that the tradesman should use the practices described in the text as rarely, and with as much reluctance, as possible, and that, like other men, he should make his words, as nearly as may be, the echo of his thoughts.].