"Though Godot contains all the wit and whimsicality of Murphy (minus a great deal of the old pedantry), it has one new ingredient — humanity. The novel and the play both tell us that human suffering is comic and irrational (" absurd" in the fashionable jargon), but only Godot reads like the work of a man who has actually suffered. …Even if it added nothing to Murphy, Godot would still be remarkable by the mere fact of being a popular play on an unpopular theme. It popularity is a smack in the face for all those who say that to be a skillful playwright one must first be a "man of the theatre." As far as I know, Mr Beckett may never have been backstage in his life until Godot was first performed. Yet, this first play shows consummate stagecraft. Its author has achieved a theoretical impossibility — a play in which nothing happens, that yet keeps audiences glued to their seats. What’s more, since the second act is a subtly different reprise of the first, he has written a play in which nothing happens, twice. . . . Godot makes fun even of despair. No further proof of Mr Beckett’s essential Irishness is needed. He outdoes MM Sartre and Camus in skepticism, just as Swift beat Voltaire at his own game. . . . About the only thing Godot shows consistent respect for is the music-hall low-comedy tradition."
January 1, 1970
https://en.wikiquote.org/wiki/Samuel_Beckett