Given the emotion joy and the tweet "A #teacher who is attempting to teach without #inspiring the #pupil with a #desire to learn is hammering cold iron. #HoraceMann", classify the intensity of the emotion displayed in the tweet. The classification options are: 0: no joy can be inferred, 1: low amount of joy can be inferred, 2: moderate amount of joy can be inferred, 3: high amount of joy can be inferred.