Who loves or pursues or desires to obtain pain of itself, because is pain, because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us every physical exercise, except to obtain some advantage from it right to find fault.

The great explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful.

Who loves or pursues or desires to obtain pain of itself, because is pain, because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us every physical exercise, except to obtain some advantage from it right to find fault.