Who said "Gratitude is the memory of the heart"?

This quote is attributed to Thales of Miletus.

Gratitude is the memory of the heart - Thales of Miletus

"Gratitude is the memory of the heart"

Thales of Miletus Gratitude

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"

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

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