Columbkille instructed that the crystal should never be used unless the work is worthy of it.

And whatever we had, you and I, whatever trust we built up over a decade of me protecting you, teaching you everything I know, you destroyed it when you lied to me and you treated me like "them, "

He came back with the gun, you know it, so you taught him a lesson.

I told them the only way they could achieve what they wanted was to build something that not only watched, but understood what it was watching.

And in it, a great hero named Kevin Bacon, teaches an entire city full of people with sticks up their butts that dancing, well...

I don't want Christine to think that morality is handed down by some invisible deity. Morality evolved to preserve the species. Whoever this is, thanks for saving me.

This week, we're going to push you past your limit to see how much of what we've taught you you've actually retained, which means you're going to use your skills of interrogation.

(Laughter) She gave us that talk to remind us that some people in the world would interpret us as misbehaving just by being black.

It feels fantastic when you do it, you look forward to doing it, and when you tell somebody else about it -- like you probably have -- you look really smart.

What we do in the next step is we release one elephant before the other and that elephant needs to be smart enough to stay there and wait and not pull at the rope -- because if he pulls at the rope, it disappears and the whole test is over.

During 41 years of teaching biology at Harvard, I watched sadly as bright students turned away from the possibility of a scientific career or even from taking non-required courses in science because they were afraid of failure.

So we arrived there with Italian seeds in southern Zambia in this absolutely magnificent valley going down to the Zambezi River, and we taught the local people how to grow Italian tomatoes and zucchini and...

So, a problem in explaining how children learn language, a problem in teaching language to adults so that they don't make grammatical errors, and a problem in programming computers to use language is which verbs go in which constructions.

Mrs. Alisch cut in front of the line and said, "I taught him how to read." (Laughter) And then something happened that changed my life.

Well, the course I was and am teaching is called Cellular and Molecular Neuroscience - I. (Laughs) It's 25 lectures full of all sorts of facts, it uses this giant book called "Principles of Neural Science" by three famous neuroscientists.

And then Arthur Samuel goes back to the computer and he plays it, and he loses, and he plays it, and he loses, and he plays it, and he loses, and Arthur Samuel has created a machine that surpasses his ability in a task that he taught it.

(Laughter) And then after my treatment, it just felt like everyone was telling me what my experience was going to mean.

They would sit side by side on their back porch looking out into the shared alleyway and Chuck would coach Tim how to spot undercover cars, how to negotiate a late-night police raid, how and where to hide.

And I remember vividly, while I was working on this, I was sitting at my computer and I saw a bunch of tweets by Polo -- Polo had been my first student back in Buenos Aires, and at the time he was living in New York.

There are fat athletes who run marathons, teach yoga or do kickboxing, all done with a middle finger firmly held up to the status quo.

Many of us don't know this because doctors don't trust pregnant women with this secret -- (Laughter) especially if she's less educated or a woman of color.

Same for gravity, two concepts, so it's -- which is quite humbling, as a, you know, if you're a teacher, and you look before and after, that's quite worrying. They do worse in tests afterwards, after the teaching.

Then she looked at me in the eyes and she said, "And mommy, I was so proud to say that you were my mom."

The genre also endorsed the problematic colonialist narrative found in many British works at the time, in which the boys teach the island’s native inhabitants their allegedly superior British values.

Since then -- it's been four decades now -- I've trained with the best in the field, performed across the globe, taught young and old alike, created, collaborated, choreographed, and wove a rich tapestry of artistry, achievement and awards.

As long as you inform your children about other religions, then you may -- and as early as you like and whatever you like -- teach them whatever creed you want them to learn.