By happiness I mean here a deep sense of flourishing that arises from an exceptionally healthy mind. This is not a mere pleasurable feeling, a fleeting emotion, or a mood, but an optimal state of being. Happiness is also a way of interpreting the world, since while it may be difficult to change the world, it is always possible to change the way we look at it.
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Matthieu Ricard
from the book The Skill of Happiness
source: http://www.matthieuricard.org/en/books/the-skill-of-happiness
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