"The collective conscience is the totality of beliefs and sentiments common to the average members of a society."

"When mores are sufficient, laws are unnecessary; when mores are insufficient, laws are unenforceable."

"The state is the very organ of social thought."

"Every time a social phenomenon is directly explained by a psychological phenomenon, we may rest assured that the explanation is false."

"Man cannot become attached to higher aims and submit to a rule if he sees nothing above him to which he belongs. To free him from all social pressure is to abandon him to himself and demoralize him."