Who said "A kind word costs nothing but achieves much"?

This quote is attributed to Thales of Miletus.

A kind word costs nothing but achieves much - Thales of Miletus

"A kind word costs nothing but achieves much"

Thales of Miletus Kindness

Philosopher Ancient Greek 624–546

"Know thyself"

"Water is the principle of all things"

"The sun is new each day"

"All things are full of gods"

"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."