The second type is suffering arising from change. This type of suffering is not obvious at the outset, but may turn into something rather painful later on. For instance, if we see a stranger die of a car accident on the street, we probably will not feel too distraught with grief. However, if the deceased should turn out to be our parent or a loved one, our grief would be very strong and immediate because of the emotional attachment we have to the person. Frankly, we would not have suffered had suffering not been a latent part of family relationship already. Besides, worldly happiness can also turn into a source of suffering. For example, the happy gathering of friends and relatives gives one pleasure, but the eventual parting makes one sad. If there had been no feeling of happiness at the gathering, there would not have been any sadness at the time of parting. Thus, happiness is in direct proportion to suffering here. Suffering arising from change may appear to be happiness on the surface, but can in fact turn into suffering at any moment. That is to say, without earlier happiness, no suffering will ensue either, just like we never feel happy or sad about meeting and leaving the strangers at the malls or other public places. Since we did not experience happiness in the first place, no suffering will ensue afterwards. Suffering arising from change is so named because the ensuing suffering concealed within prior happiness will eventually reveal itself when conditions change.

- Quote from The Right View, "The Four Noble Truths—the Path Out of Samsara"