The initial impulse is thereby amplified each time it is echoed, like an avalanche that grows as it goes along. And since passions so heated and so free from all control cannot help but spill over, from every side there are nothing but wild movements, shouts, downright howls, and deafening noises of all kinds that further intensify the state they are expressing. Probably because a collective emotion cannot be expressed collectively without some order that permits harmony and unison of movement, these gestures and cries tend to fall into rhythm and regularity, and from there into songs and dances. But in taking on a more regular form, they lose none of their natural fury. A regulated commotion is still a commotion.