“Cheerfulness is just as natural to the heart of a man in strong health as colour is to his cheek; and wherever there is habitual gloom, there must be either bad air, unwholesome food, improperly severe labour, or erring habits of life.”

“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.”

“Be happy. Talk happiness.”

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

“Happiness is the interval between periods of unhappiness.”

“It is only to the happy that tears are a luxury.”