" Ingratitude is a bad habit by which we needlessly punish ourselves. When we no longer have the things we enjoy, we miss them and long for the past, long for what is not there, long to escape. Being always mindfully unhappy and mindlessly happy is not a prudent way to live. The Epicurean must train himself to be mindfully happy. "

― Hiram Crespo , Tending the Epicurean Garden