We seem gradually to be groping toward an understanding of the world of subatomic particles, but we really do not know how far we have yet to go in this task.

The philosophical question before us is, when we make an observation of our track in the past, does the result of our observation become real in the same sense that the final state would be defined if an outside observer were to make the observation?

If we have an atom that is in an excited state and so is going to emit a photon, we cannot say when it will emit the photon. It has a certain amplitude to emit the photon at any time, and we can predict only a probability for emission; we cannot predict the future exactly.

In talking about the impact of ideas in one field on ideas in another field, one is always apt to make a fool of oneself.

Many Christians are raised believing that to be true to God's Word means to accept that the universe, Earth, and life were created in six 24-hour days, only a few thousand years ago. Most people lack the theological and scientific tools to think through the implications of this teaching.

The whole Hubble program has just been a fabulous testament to the NASA science community and the NASA astronaut community.

For three hundred years we have had our focus on the individual. We have distinguished him from the objective world as the Middle Ages did not think of doing. We have given him the world and the universe as a playground for exploration and discovery.

As adults feign disinterest in science - children can grab hold of it to distinguish themselves.