"Expressions of disapproval are on a level of vulgarity that cannot be tolerated. The way to express disapproval is to do without applause"

Rudolf Bing's quote is highlighting the significance of expressing disapproval in a respectful way. He is suggesting that expressions of disapproval need to not be done in a vulgar way, as this can not be tolerated. Instead, he recommends that the way to express displeasure is to simply not praise. This indicates that a person need to not be vocal about their disapproval, however rather simply not show any support for the action or concept. This is a subtle method of revealing disapproval without stinking or rude. Rudolf Bing's quote is a suggestion that we ought to bear in mind how we reveal our displeasure, which we must aim to do so in a considerate and dignified way.