Darrin M. McMahon, an American professor, spent six years researching the history and livelihood of mankind, and completed a book titled Happiness: A History. He concludes at the end of the book that happiness may only exist in our imagination: we can pursue happiness, but it only lives in our imagination; we can think of happiness as an ideal to follow, but it may never be attained.

~ Depicted from THE PAPER TIGER - The Tibetan Buddhist View on Happiness