Virtue is simply happiness, and happiness is a by-product of function. You are happy when you are functioning.
Function Functioning Happiness Happy Simply
If thou be industrious to procure wealth, be generous in the disposal of it. Man never is so happy as when he giveth happiness unto another.
Disposal Generous Giveth Happiness Happy
What ever our wandering our happiness will always be found within a narrow compass, and in the middle of the objects more immediately within our reach.
Compass Ever Found Happiness Immediately
Every age has its happiness and troubles.
Every Happiness Troubles
Only after I faced the unhappiness of my first marriage did I start on the path of personal growth.
Did Faced First Growth I
Happiness doesn't depend on any external conditions, it is governed by our mental attitude.
Any Attitude Conditions Depend External