Caring for your introvert

It's an old article, but I like it, especially the conclusion:

How can I let the introvert in my life know that I support him and respect his choice?

• First, recognize that it's not a choice. It's not a lifestyle. It's an orientation.
• Second, when you see an introvert lost in thought, don't say "What's the matter?" or "Are you all right?"
• Third, don't say anything else, either.