"But surely you will admit that opinions do differ?"
"They don't differ nearly so much as people pretend, on important points; or, if they do, the difference is not about what ought to be done, but about how to do it."
"What ought to be done, then?" asked Leslie defiantly.
"Well, for example we ought to make our cities decent and healthy."
"Why?"
"Because we ought; or, if you like, because it will make people happy."
"But I don't like at all! I don't see that it's necessarily good to make people happy."
"Oh well, if you deny that—"
"Well, if I deny that?"
"I don't believe you to be serious, that's all. Good simply means, what makes people happy; and you must know that as well as I do."