José Ortega y Gasset, Concord and Liberty

"When this reality, the one and only power that checks and disciplines man from within, vanishes because belief in it is slackening, the social domain falls prey to passions. The ensuing vacuum is filled by the gas of emotion. Everyone proclaims what best suits his interests, his whims, his intellectual manias. To escape the void and the perplexities of his own soul, a man will rush to join any party standard that is being carried through the streets. With society gone there remain only parties."

José Ortega y Gasset, Concord and Liberty