Based on the tweet "Dont sink to the level of those who insult you. Rather, rise to the level of those who inspire you. Deliver result, not insult", categorize the level of anger felt by the author. Select from the following: 0: no anger can be inferred, 1: low amount of anger can be inferred, 2: moderate amount of anger can be inferred, 3: high amount of anger can be inferred.