The philosophers, who have inquired into the foundations of society, have all felt the necessity of going back to a state of nature; but not one of them has got there. Some of them have not hesitated to ascribe to man, in such a state, the idea of just and unjust, without troubling themselves to show that he must be possessed of such an idea, or that it could be of any use to him. Others have spoken of the natural right of every man to keep what belongs to him, without explaining what they meant by _belongs_. Others again, beginning by giving the strong authority over the weak, proceeded directly to the birth of government, without regard to the time that must have elapsed before the meaning of the words authority and government could have existed among men. Every one of them, in short, constantly dwelling on wants, avidity, oppression, desires and pride, has transferred to the state of nature ideas which were acquired in society; so that, in speaking of the savage, they described the social man. It has not even entered into the heads of most of our writers to doubt whether the state of nature ever existed; but it is clear from the Holy Scriptures that the first man, having received his understanding and commandments immediately from God, was not himself in such a state; and that, if we give such credit to the writings of Moses as every Christian philosopher ought to give, we must deny that, even before the deluge, men were ever in the pure state of nature; unless, indeed, they fell back into it from some very extraordinary circumstance; a paradox which it would be very embarrassing to defend, and quite impossible to prove. Let us begin then by laying facts aside, as they do not affect the question. The investigations we may enter into, in treating this subject, must not be considered as historical truths, but only as mere conditional and hypothetical reasonings, rather calculated to explain the nature of things, than to ascertain their actual origin; just like the hypotheses which our physicists daily form respecting the formation of the world. Religion commands us to believe that, God Himself having taken men out of a state of nature immediately after the creation, they are unequal only because it is His will they should be so: but it does not forbid us to form conjectures based solely on the nature of man, and the beings around him, concerning what might have become of the human race, if it had been left to itself. This then is the question asked me, and that which I propose to discuss in the following discourse. As my subject interests mankind in general, I shall endeavour to make use of a style adapted to all nations, or rather, forgetting time and place, to attend only to men to whom I am speaking. I shall suppose myself in the Lyceum of Athens, repeating the lessons of my masters, with Plato and Xenocrates for judges, and the whole human race for audience.