Compare and contrast Bernard and Lenina’s personalities. Do they have differing desires and hopes for their lives? What drives them? What do they think about themselves, their lives?

Bernard Marx and Lenina Crowne are almost complete opposites in every respect. Bernard is a thinking man, an intellectual who's come to realize the true, sickening nature of the dystopian society in which he lives. Unlike those around him, he's able to distinguish between true feelings—the feelings of the heart—and those implanted in people's brains by the state's systematic process of brainwashing. Bernard has a high regard for the innate dignity of each human being, which explains, for example, why he's so upset to overhear a group of men talking about a woman as if she were nothing but a piece of meat.
Lenina has a completely different attitude to life. She's the ultimate conformist, passionately devoted to the state and its rules. Her desires are not really her own; they do not come from the heart. Instead, she's been brainwashed into acting and thinking in a certain way and has internalized how the state expects her to behave. When she goes out on a date with Bernard, she expresses the desire to play a game and then have what will be casual, meaningless sex. Again, these aren't Lenina's real desires, ones that she's freely chosen for herself; she's been brainwashed to talk and act this way.
Bernard knows that there's something seriously wrong with this society; he knows that there's a better way. Deeply unsatisfied, he wants to change his life and the lives of those around him. Lenina, on the other hand, accepts the artfully constructed fantasy world around her without a moment's thought. The very idea of challenging society's norms and values doesn't enter her head for a nanosecond. She finds Bernard so incredibly odd for wanting to take her on a walk in the Lake District. In this society, such simple pleasures in life are considered at best eccentric, at worst deeply subversive. Lenina's been so thoroughly brainwashed that any activity which doesn't involve instant gratification is simply too weird to contemplate. She seems perfectly content with her lot, but as we and Bernard know, this is a purely artificial contentment, cynically induced by the state to keep her under its control.