Hot countries need inhabitants less than cold countries, and can support more of them.
 Jean-Jacques Rousseau, The Social Contract (1762). copy citation

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

Context

“from which it may be inferred that a like gradation in the same direction, from equator to pole, is found generally. But is it not an obvious disadvantage for an equal product to contain less nourishment? To all these points may be added another, which at once depends on and strengthens them. Hot countries need inhabitants less than cold countries, and can support more of them. There is thus a double surplus, which is all to the advantage of despotism. The greater the territory occupied by a fixed number of inhabitants, the more difficult revolt becomes, because rapid or secret concerted action is impossible, and the government can easily unmask projects and cut communications;” source