Each day, millions of police officers do the selfless work of putting their lives on the line to protect civilians, frequently responding to or preventing crises completely with no recognition.

A travel book is about someone who goes somewhere, travels on the ground, sees something and spends quite a lot of time doing it, and has a hard time, and then comes back and writes about it. It's not about inventing.

I will talk about two sets of things. One is how productivity and collaboration are reinventing the nature of work, and how this will be very important for the global economy. And two, data. In other words, the profound impact of digital technology that stems from data and the data feedback loop.

I had a teacher, he was 86 years old and his name was Luigi in New York City, and he said, 'Never stop moving. You get to reinvent yourself.' So you have to find ways to reinventing yourself. Especially today, because it's a whole different market - social media is so important.

Trump gives progressives a way to channel whatever guilt they might have - whether from preventing homebuilding, benefitting from unfair taxes and pensions, or depriving black and Latino students the teacher quality and school funding they need - into a sanctimonious tribal rage against Republican racism.

Most Jupiter-sized planets orbit the mother star in a highly elliptical orbit. This means they will often cross the orbit of any Earth-like planet and fling it into outer space, making life impossible. But our Jupiter travels in a near-perfect circular orbit, preventing a collision with any Earth-like planet, making life possible.

From inside where I live, I feel like I just perceive events in a certain rational way. I often find it sad or poignant, and it may not make me laugh a bit. But I don't mind inventing a portrait that allows others to laugh if that's what they want to do.

I am always interested in that relationship between outer reality and inner desire, and I think it is important to pay attention to the inner voice because it is the only way to discover your mission in life and the only way to develop the strength to break with whatever familial or cultural norms are preventing you from fulfilling your destiny.

The same people who are murdered slowly in the mechanized slaughterhouses of work are also arguing, singing, drinking, dancing, making love, holding the streets, picking up weapons and inventing a new poetry.

Animal rights can be as extreme as not riding a horse, or not wearing leather, not having a pet at all. Animal welfare advocates are preventing the suffering of animals. And then there's conservation and species conservation and what conservation biologists do.

Music is my one opportunity to let out how I'm feeling when I'm not talking to a chick or my mom, you know what I mean? It's just venting.

To be blunt, we need to remove the administrative barriers preventing legitimate research into medical marijuana, which is why I've decided to roll out the MEDS Act.

We need new medical approaches to preventing and/or curing disease. We need new scientific approaches to generating, storing, and being more efficient with energy. Maybe we need more space exploration. Maybe we need more undersea exploration.

These core principles - helping patients, preventing medical errors, promoting best practices and improving quality - are the reasons that health IT is featured in both the 2012 Republican platform and 2012 Democratic platform.

I was proud to share the stories of my friends at Georgetown Law who have suffered dire medical consequences because our student insurance does not cover contraception for the purpose of preventing pregnancy.

I don't believe medical discoveries are doing much to advance human life. As fast as we create ways to extend it we are inventing ways to shorten it.

The job of the press is to speak truth to power. And yet, for doing our job, we are persecuted. I say that these aggressive and illegal tactics to silence us - inventing arbitrary legal interpretations, over-zealous charges and disproportionate sentences - must not be permitted to succeed.

My U.N. five-point plan focuses on preventing proliferation, strengthening the legal regime, and ensuring nuclear safety and security - an effort that was given good momentum by the Nuclear Security Summit held in Seoul earlier this year. The world is over-armed, and peace is underfunded.

One of the best teaching experiences Ed Schein and I had when we were teaching at MIT in the 1960s was inventing a course on leadership through film.

You have to be constantly reinventing yourself and investing in the future.

The day I made that statement, about the inventing the internet, I was tired because I'd been up all night inventing the Camcorder.

When the Taiwan Relations Act passed in 1979, our biggest concern was preventing the use of military force against Taiwan. Little did we know that our friends on Taiwan could so effectively use the space created by our friendship to revolutionize their political system.

Is fear preventing you from taking action? Acknowledge the fear, watch it, take your attention into it, be fully present with it. Doing so cuts the link between the fear and your thinking. Don't let the fear rise up into your mind. Use the power of the Now. Fear cannot prevail against it.

If you think Abraham Lincoln became famous for inventing the town car, it is time to spend a few hours on history.