Who said "Gratitude is the poison of those who accept defeat."?

This quote is attributed to Ivan Vanko.

Gratitude is the poison of those who accept defeat. - Ivan Vanko

"Gratitude is the poison of those who accept defeat."

Ivan Vanko Gratitude

"I am the science, I am the progress."

"You think you're the only one with power? You are mistaken."

"A man is defined by his work, not by his words."

"Vengeance is the only truth that matters."

"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"