“Those born to wealth, and who have the means of gratifying every wish, know not what is the real happiness of life, just as those who have been tossed on the stormy waters of the ocean on a few frail planks can alone realize the blessings of fair weather.”

“It's not what happens to you, but how you react to it that matters.”

“The happiness which is lacking makes one think even the happiness one has unbearable.”

“Happiness is the interval between periods of unhappiness.”

“Happiness... consists in giving, and in serving others.”

“Every gift from a friend is a wish for your happiness.”

“Satisfaction of one's curiosity is one of the greatest sources of happiness in life.”