Who said "Memory is the treasury of a orator."?

This quote is attributed to Xenophon.

Memory is the treasury of a orator. - Xenophon

"Memory is the treasury of a orator."

Xenophon Creativity

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."

"When life gives you lemons, make something beautiful."

"Creativity knows no bounds."

"Creativity is the expression of the soul."

"I'm making this up as I go."