What dominant theme emerges from act 1?

Wilde, through the skeptical Algernon, makes an immediate critique of marriage as "demoralising," and throughout the scene the best bon mots are reserved for mocking that most traditional romantic covenant. Wilde is the master of the epigram, a concise, typically witty or paradoxical saying. His skill lies not only in coining wholly new epigrams, but in subverting established ones. For instance "in married life, three is company and two is none" captures the monotony of monogamy by playing it against the commonplace "two is company, three's a crowd."