You might not realize how much perfection is getting in the way of your freedom and your joy, says Reshma Saujani, founder and CEO of Girls Who Code. Take this quiz to find out.

Wondering what TED talk you should watch next? Take this short quiz and receive a recommendation that matches your personality.

By discovering what drives you and your art, you can tap into your deepest motivations and achieve your full creative potential, says writer and professor Meta Wagner.

You probably have a hunch about which one you are, but why not take this quiz — from organizational psychologist Adam Grant — and double-check?

Ready to match wits with a 19th-century student? Read on.