In order to achieve a true understanding of string theory, some new idea will be required, and most likely, some break with the concepts on which we've traditionally based physical theory.

The Big Bang theory is the idea that if we go back early enough in the history of the universe - and we can do this, of course, by looking at starlight coming to us from billions of years ago - we will see a very hot and dense period where the universe was much smaller, denser, and hotter.

Some wonder whether some day we will arrive at a theory of everything and run out of new problems to solve - much as the effort to explore the earth ran out of new continents to explore.

Quantum field theory was originally developed for the treatment of electrodynamics, immediately after the completion of quantum mechanics and the discovery of the Dirac equation.

I want to be an involved parent in my daughter's life and do the things that other parents do, like go to the PTA meetings.

I don't think quantity time is as special as quality time with your family.

I am a family man, and I have children.

Too many of the elderly do not have the family or the communal attachments necessary to feel valued; too many are widowed or otherwise alone; too many live in surroundings where they are essentially without the companionship necessary to stimulate a mind in danger of deteriorating.