Excellence is not a skill. It is an attitude.

The quote distinguishes between competence and character. A “skill” can be taught, practiced, and measured, but Marston argues that “excellence” depends more fundamentally on a person’s stance toward their work: care, discipline, humility, and the willingness to do small things well even when no one is watching. Read this way, excellence is less a technical achievement than a consistent orientation—choosing high standards, persistence, and integrity across situations. The aphorism also implies that skills are necessary but not sufficient: two people may have similar abilities, yet the one who approaches tasks with attentiveness and commitment will more reliably produce excellent outcomes.