Quote 4
"I hate the way you talk about your married life, Harry," said Basil Hallward, strolling towards the door that led into the garden. "I believe that you are really a very good husband, but that you are thoroughly ashamed of your own virtues. You are an extraordinary fellow. You never say a moral thing, and you never do a wrong thing. Your cynicism is simply a pose."
"Being natural is simply a pose, and the most irritating pose I know," cried Lord Henry, laughing. (1.11-12)
Here's the difference between Basil and Henry, in a nutshell – Basil believes that people are innately (perhaps secretly) good, and that his friend's cynicism is just a front. Henry, on the other hand, is more suspicious – especially of people who pretend to be totally upfront all the time.
Quote 5
The painter bit his lip and walked over, cup in hand, to the picture. "I shall stay with the real Dorian," he said, sadly.
"Is it the real Dorian?" cried the original of the portrait, strolling across to him. "Am I really like that?"
"Yes; you are just like that."
"How wonderful, Basil!"
"At least you are like it in appearance. But it will never alter," sighed Hallward. "That is something." (2.34)
Huh…Basil's wistful comment hits closer to home than he can possibly realize at this stage. The portrait is the real Dorian – more real than its artist can even conceive of. So real, in fact, that it has to alter eventually…
Quote 6
"Dorian, this is horrible! Something has changed you completely. You look exactly the same wonderful boy who, day after day, used to come down to my studio to sit for his picture. But you were simple, natural, and affectionate then. You were the most unspoiled creature in the whole world. Now, I don't know what has come over you. You talk as if you had no heart, no pity in you. It is all Harry's influence. I see that."
The lad flushed up and, going to the window, looked out for a few moments on the green, flickering, sun-lashed garden. "I owe a great deal to Harry, Basil," he said at last, "more than I owe to you. You only taught me to be vain."
"Well, I am punished for that, Dorian -- or shall be some day." (9.2-3)
This cold exchange between Basil and Dorian expresses the danger in mistaking outer beauty for inner beauty. Poor Basil is just realizing that the Dorian before him really is totally different from the Dorian he captured in paint. There's an interestingly prescient note in his declaration that he is or will be "punished" for showing Dorian his own beauty – he tragically doesn't know how true these words will be.