How does Oscar Wilde use Lord Henry as a rhetorical device?

The character of Lord Henry Wooton in The Picture of
Dorian Gray serves as a rhetorical device for several
reasons:

First he represent the basic Id of every human
being. This basic Id means the inner cauldron of the human soul which is inherently
capable of all the sins and evils possible all for he sake of experiencing new
sensations, as he said himself.

Secondly, he represents the
aesthetic movement and the philosophies that Wilde so much admired at the time from
Walter Pater (Art for Art's sake),and the artificial creation of beauty, the exploration
of the good and the bad, and the consistent seeking of
pleasure.

Third, Lord Henry (or Harry) also serves as
Dorian's conscience, or lack thereof. Lord Henry presented to Dorian everything Dorian
always wanted to explore, all the passions, all the pleasures, and all the levels of
emotion possible. Lord Henry was the snake in Paradise that engaged Dorian into the
corruption of his soul. He presented to him all the possibilities in becoming amoral in
which the first thing is the lack of responsibility in one's
choices.

This is how Lord Henry is a representation of sin,
temptation, and corruption in Dorian's life.