It takes a long time for feeling so to change that men can make up their minds to take their equals as masters, in the hope that they will profit by doing so.
From the mere fact that God was set over every political society, it followed that there were as many gods as peoples. Two peoples that were strangers the one to the other, and almost always enemies, could not long recognise the same master
 Jean-Jacques Rousseau, The Social Contract (1762). copy citation

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

Context

“When Sparta has pronounced on what is or is not right, Greece makes no appeal from her judgments. 8. Civil Religion [edit] AT first men had no kings save the gods, and no government save theocracy. They reasoned like Caligula, and, at that period, reasoned aright. It takes a long time for feeling so to change that men can make up their minds to take their equals as masters, in the hope that they will profit by doing so. From the mere fact that God was set over every political society, it followed that there were as many gods as peoples. Two peoples that were strangers the one to the other, and almost always enemies, could not long recognise the same master: two armies giving battle could not obey the same leader. National divisions thus led to polytheism, and this in turn gave rise to theological and civil intolerance, which, as we shall see hereafter, are by nature the same.” source