" the mind plays the essential role in satisfaction and dissatisfaction, happiness and suffering, fulfillment and failure. The mind is behind every experience in life. It is also what determines the way we see the world. The mind is the window from which we see ‘our’ world. It only takes the slightest change in our minds, in our way of perceiving people and things, for that world to be turned completely upside-down. "
― Jean-François Revel , The Monk and the Philosopher: A Father and Son Discuss the Meaning of Life