Who said "Kindness is a currency that increases when spent."?

This quote is attributed to Amy Lowell.

Kindness is a currency that increases when spent. - Amy Lowell

"Kindness is a currency that increases when spent."

Amy Lowell Kindness

Poet Critic American 1874–1925

"Poetry is the clear expression of mixed feelings."

"All books are either dreams or swords."

"The world breaks everyone, and afterward, many are strong at the broken places."

"Beauty is something wonderful and strange that the artist brings into the world."

"A good man treats his wife with respect."

"Kindness always comes back around."

"The power of a smile can change everything."

"Kindness is weakness to some. Not to me."