Everyone knew that if you divided reality by expectation, you got a happiness quotient. But when you invert the equation - expectation divided by reality - you didn't get the opposite of happiness. What you got, Lewis realized, was hope.
Jodi Picoult (2012). “The Jodi Picoult Collection #3: Vanishing Acts, The Tenth Circle, and Nineteen Minutes”, p.1018, Simon and Schuster
