The quote "Never trust the one who excels" from Jennifer L. Armentrout's book "Opal" suggests a cautionary approach towards individuals who appear overly proficient or successful. It implies that those who seem to excel may hide ulterior motives or deceptive traits beneath their polished exterior. The essence of the quote serves as a reminder to question the intentions of those who appear to have everything figured out.

This perspective encourages a critical view of excellence and success, implying that superficial attributes might mask deeper issues. Trust should be built on authenticity and transparency rather than mere achievements, prompting readers to delve deeper into people's true characters before placing their trust in them.