Who said "A promise kept is worth more than a sale made."?

This quote is attributed to Marshall Field.

A promise kept is worth more than a sale made. - Marshall Field

"A promise kept is worth more than a sale made."

Marshall Field Truth

Retail Pioneer American 1834–1906

"Give the lady what she wants."

"Those who cannot remember the past are condemned to repeat it."

"Observe, record, tabulate, communicate."

"The customer is always right."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."