Given the emotion sadness and the tweet "Remember, for everything you have #lost, you have gained something else. Without the #dark, you would never see the #stars.", classify the intensity of the emotion displayed in the tweet. The classification options are: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.