[176] For not only do they form different opinions respecting the same things at different times, but different men also judge in different manners, some looking on things as pleasures, which others on the contrary regard as annoyances. For the things with which some persons are sometimes vexed, others delight in, and on the contrary the things, which some persons are eager to acquire and look upon as pleasant and suitable, those very same things others reject and drive to a distance as unsuitable and ill-omened.