Who said "Gratitude is the foundation of a grateful heart."?

This quote is attributed to Syl.

Gratitude is the foundation of a grateful heart. - Syl

"Gratitude is the foundation of a grateful heart."

Syl Gratitude

Character in The Way of Kings

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"Stormlight costs nothing. It is free for all who will take it."

"The light inside us can never be extinguished."

"Even the smallest person can change the course of the future."

"The wind calls to me, and I must answer."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"