Well, regarding that quote (interesting no doubt), see some important caveats at https://www.hillelwayne.com/post/alan-kay/ https://www.hillelwayne.com/post/ala

Well, regarding that quote (interesting no doubt), see some important caveats at https://www.hillelwayne.com/post/alan-kay/ https://www.hillelwayne.com/post/alan-kay/ which goes into some detail on evolving views about OOP (including that quote). It turns out that Alan Kay did not coin the term “objects”, though he did coin “object-oriented programming”, but even in Smalltalk, messages were only one idea of three: the post concludes that “OOP consisted of three major ideas: classes that defined protocol and implementation, objects as instances of classes, and messages as the means of communication.”