What are the delusions (madness) of Willy Loman in Death of a Salesman by Arthur Miller?

Willy
Loman has numerous delusions throughout the play, which protect him from the harsh realities of
life. Willy Loman is a struggling salesman, who has failed to instill positive character traits
in his children. Willy has allowed and encouraged his sons to steal, cheat, and lie, which has
negatively affected the trajectory of their lives and is largely responsible for their lack of
success. Willy taught Biff and Happy that the key to success was being well-liked, which is
absolutely incorrect. Willy has also been a poor role model to his children and was even caught
cheating on Linda. In order to protect himself from accepting the realities of his unfortunate
situation, Willy creates delusions, which allow him to blame others for his lack of success.
Willy blames his wife for not allowing him to follow Ben to Africa and also says that Biff has
become a failure out of spite. Willy also refuses to take responsibility for offering terrible
advice to his children and enabling them to...