"Great indebtedness does not make men grateful, but vengeful; and if a little charity is not forgotten, it turns into a gnawing worm"

This quote by Friedrich Nietzsche suggests that being deeply indebted to someone does not always lead to sensations of appreciation. In truth, it suggests that it can cause feelings of bitterness and a desire for revenge. In addition, Nietzsche claims that even if the indebted individual receives some kind of charity, it will just produce a sense of regret and a feeling of insufficiency, like a gnawing worm that does not go away. The quote highlights the complexity of human emotions and relationships, especially those involving power characteristics and insolvency.