Who said "He that is content with his lot is the richest man."?

This quote is attributed to Diogenes Laërtius.

He that is content with his lot is the richest man. - Diogenes Laërtius

"He that is content with his lot is the richest man."

Diogenes Laërtius Gratitude

Historian Biographer Ancient Greece

"The man who is not afraid of the sea will soon be drowned, for he will be going out on a day he shouldn't."

"It is not that the man has failed, but that he aimed at nothing and succeeded."

"Know yourself."

"The foundation of every state is the education of its youth."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"