In the novel "Herzog" by Saul Bellow, the protagonist expresses a compelling idea about the impact of one's thoughts on mental health. The phrase, "One thought-murder a day keeps the psychiatrist away," suggests that by consciously rejecting harmful or intrusive thoughts, individuals can protect their mental well-being. This reflects a deeper philosophical view on the necessity of controlling one’s inner dialogue to maintain psychological stability.

Bellow's work delves into the complexities of human emotions and the struggle for life clarity. The character's commentary highlights how managing negative thoughts can serve as a form of self-care, potentially eliminating the need for professional intervention. In essence, the novel encourages readers to engage with their inner thoughts constructively, promoting a proactive approach to mental wellness.