I have been studying the science of hope and positive psychology for two decades. I’ve gathered 10 quotes on hope to come back to as a hope practice.

Hope is fascinating because it is the only positive emotion that requires the presence of negativity or uncertainty to be activated. This makes it ferociously unique, and the new science and theories about how hope works is changing fields of study, in medicine, psychology, therapy, education, meditation, and the science of longevity. Hope is essential to understanding well-being. Here, in no particular order, are ten of the most inspiring quotes on hope I’ve collected.