Who said "Success consists in doing what you can do well."?

This quote is attributed to Xenophon.

Success consists in doing what you can do well. - Xenophon

"Success consists in doing what you can do well."

Xenophon Success

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."

"Success comes to those who never give up."

"Success is measured by happiness, not money."

"You make your own luck in this world."

"You have to be organized to be successful in anything."