Who said "A kind word costs nothing but is worth everything."?

This quote is attributed to William Astor.

A kind word costs nothing but is worth everything. - William Astor

"A kind word costs nothing but is worth everything."

William Astor Kindness

Merchant & Real Estate American 1763–1848

"Wealth is the means, not the end."

"The only true legacy is the impact we leave on others."

"Fortune favors those who dare to act."

"A man's character is his fate."

"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."