What evils does the controller say the B.N.W has eliminated that used to exist in the past? Regarding "Brave New World" by Aldous Huxley
Near the end of Brave New World, the Controller says that his society has gotten rid of the fear of death, social instability, the upsets of passion, and the sufferings of old age. Along the way he also says they've gotten rid of their emotional connections to families and lovers, which he doesn't say is evil, but which did lead to upsets and instability. A bit later he talks about his world being free of war because it is stable; this too is one of the evils his society's put behind them.
At the ending of the Brave New World, Controller ( Mustapha Mond) eliminated religion and religious experiences, which was expunged from World State society. He also banned religious writings and confiscated them. He also removed problems of the threat of loss, old age and even death itself. He eliminated all these things as he feared that it would lead to unhappiness.