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

Be happy for this moment. This moment is your life.

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

An effort made for the happiness of others lifts above ourselves.

Happiness is not something ready made. It comes from your own actions.

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

Life does not agree with philosophy: There is no happiness that is not idleness, and only what is useless is pleasurable.

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

Action may not always bring happiness but there is no happiness without action.

I do believe that if you haven't learnt about sadness, you cannot appreciate happiness.