Intelligence is what you use when you don't know what to do: when neither innateness nor learning has prepared you for the particular situation.

The main functions of intelligence, that of inventing solutions and that of verifying them, do not necessarily involve one another. The first partakes of imagination; the second alone is properly logical.

Logical activity is not the whole of intelligence. One can be intelligent without being particularly logical.

The current state of knowledge is a moment in history, changing just as rapidly as the state of knowledge in the past has ever changed and, in many instances, more rapidly.

By coordinating with international partners on scientific issues, we strengthen the U.S. scientific enterprise and promote the free exchange of ideas in other nations.

Time travel used to be thought of as just science fiction, but Einstein's general theory of relativity allows for the possibility that we could warp space-time so much that you could go off in a rocket and return before you set out.

Neuroscience is now a very important research area in biology. We are now understanding a lot more about brains in babies, as well as children and adults.

Here's a bit of Discovery Channel for you - apples don't last forever. They can stay fresh for a long time, especially when refrigerated, but definitely not from December into the month of March.