[pholbrook]

This is an outstanding paper; one of my favorites in all of computing. Read it and marvel at all that Kay has been part of.

[Rochus]

Too much (self) marketing for my taste; I much prefer this one: https://dl.acm.org/doi/10.1145/3386335 (Ingalls, 2020, The evolution of Smalltalk: from Smalltalk-72 through Squeak)