Whenever you write a character, you want to make them themselves, you want to make them unique. You don't want fifty characters in your book and they all pretty much act and think the same except they have different colored hair.

But I don’t believe every bit of nonsense that gets rumored about.

It was wise enough to know itself, and brave enough to be itself, and wild enough to change itself while somehow staying altogether true.

Also, worldbuilding touches all aspects of your story. It touches plot and character as well. If you don't know the culture your character comes from, how can you know what he's really like? You must know your characters on a much deeper level than you would if you just shrugged your way into a cookie cutter fantasy world.

It gets tiresome being spoken to as if you are a child, even if you happen to be one.

He taught only one class: 'Unlikely Maths'. But since the time was listed as "now" and the place, "everywhere," this was hardly helpful in tracking him down.

In brief, worldbuilding is different than setting in my opinion. Setting is a room. A backdrop. It's scenery. But without good worldbuilding, you can't have realistic feeling scenery. You can't have cool, unique backdrops for your story.