How is Naturalism displayed in Aldous Huxley's Brave New World?
As a belief that the world can be explained in scientific terms without supernatural or spiritual explanations, Naturalism discounts the existence of God. Under the belief of Naturalism, it is man who makes prinicples, not any deity.
In the New World of Aldous Huxley's Brave New World, time is measured from the time that Henry Ford created the assembly line for manufacturing the Model T Ford. The sign of the T has replaced the Christian sign of the cross. Like Ford's assembly line, babies are manufactured in the Central London Hatchery and Conditioning Centre; there is no need for procreation sanctioned by any God because genetic engineering has taken its place. Hypnopoedia, or sleep conditioning, has replaced religious instruction; the Solidarity Service serves as a parody of the Christian services as soma is taken as communion; Obstacle Golf and other consumer activities have replaced any activities connected to nature. In short, everyone and everything is manufactured scientifically. And, when people die, they are recycled into gases.
Ten World Controllers run the New World, and science dictates the lives of the residents of this world. They control this world with the feelies, depression is controlled with soma, and the desire for motherhood by artificial fertility. The advancement of science has affected all humanity.