2 Quotes by Alexandre Koyré

It is patent that any group [believing itself to be] surrounded by a world of unbending and irreconcilable foes would see the abyss between itself and them as one that could be spanned by no tie or social obligation. Within such a group, the lie—as told to the "others"—would be neither an act merely tolerated nor a simple rule of social behavior; it would become obligatory and be transformed into a virtue.

That man has always lied, to himself and to others, is indisputable. He has lied for the sheer fun of it—the fun of exercising this astounding gift of being able to "say what is not so," creating by his word a world for which he alone is responsible. Also, he has lied in self-defense: the lie is a weapon. It is the preferred weapon of the underdog and the weakling.