"When about to commit a base deed, respect thyself, though there is no witness"

This quote by Ausonius talks to the significance of self-respect, even in moments when one is lured to do something morally wrong. The expression "devote a base deed" suggests an action that breaks one's own values and concepts. In such a situation, the author advises us to remember our own self-regard and dignity, despite whether anybody else is watching. This highlights the idea that our actions ought to not be entirely inspired by the fear of being captured or evaluated by others, but rather by our own sense of stability and dignity. Eventually, this quote serves as a tip to always remain true to oneself, even in the face of temptation.