According to Steinbeck, what makes man superior to animals? Do you agree? Why?

“For it is said that humans are never satisfied, that you give them one thing and they want something more. And this is said in disparagement, whereas it is one of the greatest talents the species has and one that has made it superior to animals that are satisfied with what they have.”

According to Steinbeck, what makes man superior to animals is that man always wants more. I do not agree..... I know many people who are happy and satisfied with their lives.