In the ancient world wealth usually meant having all of one's needs--food, shelter, clothing--for self and family.[i]  

-Socrates

Being rich meant having more than one's personal and family needs.[ii]  

-Plato, Aristotle

Happiness consisted in having wealth for oneself and enough riches to help others fulfill their needs.[iii] 

-Solon, Aristotle, Aquinas

We have gained a lot of depth in science, technology and many other fields since the times of Aristotle and Herodotus, but we may have lost a great deal of wisdom. 

A boost of giving would increase our personal and national happiness.