Who said "The path to happiness is found in duty well performed."?

This quote is attributed to Xenophon.

The path to happiness is found in duty well performed. - Xenophon

"The path to happiness is found in duty well performed."

Xenophon Happiness

Historian Soldier Ancient Greece 430–354

"The sweetest of all sounds is praise."

"He who wishes to be obeyed must know how to command."

"It is impossible for a man to be cheated by anyone but himself."

"Know thyself."

"Babalú!"

"My greatest joy is making people smile."

"Laughter and love make a home."

"The best things in life are free."