" This experience of partness within a dynamic whole leads to a temporary suspension of individual responsibility-which is replaced by unconditional subordination to the 'controlling centre', the leader of the crowd. It further entails the temporary effacement of all self-assertive tendencies: the total surrender of the individual to the collectivity is manifested in altruistic, heroic, self-sacrificing acts-and at the same time in bestial cruelty towards the enemy or victim of the collective whole. This is a further example of the self-transcending emotions serving as catalysts or triggers for their opponents. "

― Arthur Koestler , The Act of Creation