http://playfullytacky.com/2014/07/16/things-you-should-know-about-introverts/

"I have no problem getting up in front of a group of people and giving a talk. I don’t even get nervous by a question and answer period. But – here is the thing – I will need major recharge time afterwards and I won’t be able to keep up this extroverted illusion all day. I can turn it on to dazzle a crowd, but if you take me out for lunch afterwards, I’ll probably just listen to you talk. I am an excellent listener."