The mood in ''Nothing so true as what you once let fall Most women have no characters at all'' is

The mood in the phrase "Nothing so true as what you once let fall, Most women have no characters at all" is pessimistic. This sentence implies a negative view of women, suggesting that they lack individuality or a distinct personality. The speaker appears to be disheartened or cynical, believing that women are generally shallow or uninteresting. The word "true" suggests that the speaker has had personal experiences that have led them to this conclusion, and the phrase "once let fall" implies that this sentiment was revealed inadvertently or unintentionally. Overall, the mood conveyed is one of disappointment and disillusionment.