Bliss is a constant state of mind, undisturbed by gain or loss. – Author Unknown

Out of moderation a pure happiness springs. – Johann von Goethe

That moderation which nature prescribes, which limits our desires by resources restricted to our needs, has abandoned the field; it has now come to this — that to want only what is enough is a sign both of boorishness and of utter destitution. – Seneca (Seneca the Elder)

From a worldly point of view there is no mistake so great as that of being always right. – Samuel Butler, Note-Books, 1912