Reality is made of our desire to enjoy and the pleasure that motivates this desire to operate. These are the only two components on all levels of reality—the pleasure and the desire to receive pleasure. When pleasure is absent, it creates a sensation of a desire to enjoy. But sometimes the deficiency of pleasure is so intense that it creates a sensation of suffering. Because everything is made of a certain measure and quality of a desire to receive pleasure, everything also suffers when it is absent—minerals, plants, animals, and people.
In fact, suffering is a necessary sensation that impels a creature to leave its present state and move on to the next. Without suffering, there is no motion. In fact, motion means that my present state is unsatisfactory, so I decide that I will be better off in a different state. Suffering enables us to make the necessary effort to move toward a situation that seems better.