This is by far one of the most important talks on parenting you'll likely ever hear. It's about how to raise your children to be thinkers. Dale McGowan's FREEOK 2013 talk explains why religious indoctrination is damaging to children and gives examples on how to avoid stifling a child's curiosity and, instead, nurturing their natural instincts to want to search for the answers.
I highly recommend watching this video. And if you're not a parent, that's find too, many of McGowan's points about critical thinking can be applied to the self as well. Enjoy!