Morality is not the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness.

Always leave something to wish for otherwise you will be miserable from your very happiness.

Happiness is when what you think, what you say, and what you do are in harmony.

Friendship improves happiness and abates misery, by the doubling of our joy and the dividing of our grief.

What we call the secret of happiness is no more a secret than our willingness to choose life.

Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

It is not how much we have, but how much we enjoy, that makes happiness.

Be more dedicated to making solid achievements than in running after swift but synthetic happiness.

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

It is not in the pursuit of happiness that we find fulfillment, it is in the happiness of pursuit.