Before I could become a military officer or a Member of Congress, I was required to do one thing: Take an oath to the Constitution.

Military members understand that the focus is on completing the mission. We don't care if you are tall or short; have dark skin or pale skin or freckles; or are gay, straight, or transgender.

A comprehensive Syria strategy, ideally one that's more than 280 characters, remains a key requirement to protect U.S. interests in the Middle East.

The U.S. cannot implement a cogent strategy on the world stage if no one is sure whether to take the President seriously.

Contrary to what professional economists will typically tell you, economics is not a science. All economic theories have underlying political and ethical assumptions, which make it impossible to prove them right or wrong in the way we can with theories in physics or chemistry.

The dialogue and conversation about food is everywhere - television, chat rooms, social media outlets and among everyday conversations.

I think the really cool and compelling thing about math and physics is that it opens up entry to all these hypotheticals - or at least, it gives you the language to talk about them. But at the same time, if a scenario is completely disconnected from reality, it's not all that interesting.

While a lab director can get done the things that he regards as important, he has the more important job of bringing out the best ideas of the broader scientific community. I learned this early in my career while I was leading the construction of the SPEAR facility.