Who said "Gratitude is the foundation of a good life."?

This quote is attributed to Romain Rolland.

Gratitude is the foundation of a good life. - Romain Rolland

"Gratitude is the foundation of a good life."

Romain Rolland Gratitude

Novelist Musician French 1866–1944

"Life is a beautiful struggle."

"Art is the effort of man to express the unspoken."

"Music is the one incorporeal entrance into the higher world of knowledge."

"Love is life's blood."

"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"