who discussed the iron law of wages
This raises the question of who came up with the iron law of wages, if it was not Ricardo. Apparently the Iron Law was named by Ferdinand Lassalle. Stirati (1994) reads Marx as here saying that Malthus was the law's creator: It is well known that nothing of the 'iron law of wages' is Lassalle's except the word 'iron' borrowed from Goethe's 'great, eternal iron laws'.