" Despite the disreputable company it keeps, bismuth is harmless. In fact, it’s medicinal: Doctors prescribe it to soothe ulcers, and it’s the ‘bis’ in hot-pink Pepto-Bismol. Overall, it seems like the most out-of-place element on the periodic table, a gentleman among scoundrels. "
- Sam Kean

The quote suggests that bismuth, despite its association with other elements known for their less desirable properties or uses, remains safe and beneficial in medicine. It highlights how bismuth stands out as a helpful element among others that might have negative connotations.

At a deeper level, the quote serves to illustrate the importance of not judging an entity based solely on its company or associations. Bismuth's medicinal value and positive attributes set it apart from the often harmful or controversial contexts in which it is found. This metaphor can be applied beyond chemistry to various aspects of life, such as social interactions, career choices, or personal relationships where one might face skepticism due to their connections rather than their inherent qualities.

The quote comes from Sam Kean, a renowned science writer and journalist known for his ability to make complex scientific concepts accessible and engaging. His work often focuses on the history of chemistry and physics, blending factual information with storytelling to captivate readers across diverse backgrounds.