Definition & Meaning of "a clear conscience is a sure card"

What is the origin of the proverb "a clear conscience is a sure card" and when to use it?

The origin of the proverb "a clear conscience is a sure card" is not definitively traced to a specific source, but the sentiment aligns with various teachings found in moral and philosophical traditions. It implies that one who has acted ethically is unlikely to fear exposure or consequence, making them more resilient and assured in their decisions. The proverb serves as a reminder that a strong moral foundation can serve as a reliable asset, offering both inner peace and external confidence.