“Excellence is not an exception, it is a prevailing attitude.”
This evokes Will Durant's famous summation of Aristotle: "Excellence then is not an act, but a habit."
2000s, The Powell Principles (2003)
Context: If you are going to achieve excellence in big things, you develop the habit in little matters. Excellence is not an exception, it is a prevailing attitude.
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Colin Powell 63
Former U.S. Secretary of State and retired four-star general 1937Related quotes

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Describing a discussion following the presentation of a paper at a student society.
Source: In Search of Excellence (1982), p. 75.

Source: (1776), Book II, Chapter V, p. 402.
Quoted in "Paul Newman's Road To Glory", interview with Paul Fischer, Film Monthly (2002-07-01)