Is there a difference between happiness and inner peace? Yes. Happiness depends on conditions being perceived as positive; inner peace does not.
— Eckhart Tolle
Happiness in intelligent people is the rarest thing I know.
— Ernest Hemmingway 
Happiness is anyone and anything that’s loved by you.
— Charlie Brown
That man is richest whose pleasures are cheapest.
— Henry David Thoreau
If you want to be happy, be. Leo Tolstoy

If you want to be happy, be. Leo Tolstoy