Delphi and Free Pascal are a bit too far removed from Wirth's idea of simple languages which is probably why he didn't mention them. Delphi 1 (let alone the mod

Delphi and Free Pascal are a bit too far removed from Wirth's idea of simple languages which is probably why he didn't mention them. Delphi 1 (let alone the modern variants) added more stuff to Turbo Pascal than the entirety of Wirth's Pascal and it is more of a new language that has his Pascal as roots - after all programming languages affect how you think about the solutions of the problems you are trying to solve and the way you'd write a Delphi/Free Pascal program would be very different than the way you'd write a Wirth Pascal program. Notice that he sees Oberon as the successor to Pascal and Oberon is an even simpler language than Pascal was.