Those which stir up sects and parties are harmful; those attended by neither are advantageous.
 Jean-Jacques Rousseau, The Social Contract (1762). copy citation

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Author Jean-Jacques Rousseau
Source The Social Contract
Topic sect party
Date 1762
Language English
Reference Of the Social Contract, or Principles of Political Law, Book II
Note Translated by George Douglas Howard Cole
Weblink https://en.wikisource.org/wiki/The_Social_Contract/Book_II

Context

“If there were no different interests, the common interest would be barely felt, as it would encounter no obstacle; all would go on of its own accord, and politics would cease to be an art.
8. "In fact," says Machiavelli, "there are some divisions that are harmful to a Republic and some that are advantageous. Those which stir up sects and parties are harmful; those attended by neither are advantageous. Since, then, the founder of a Republic cannot help enmities arising, he ought at least to prevent them from growing into sects" (History of Florence, Book vii) .
9. Attentive readers, do not, I pray, be in a hurry to charge me with contradicting myself.” source