According to materialistic science, any memory requires a material substrate, such as the neuronal network in the brain or the DNA molecules of the genes.

In some instances, the accuracy of past-life memories can be objectively verified, sometimes with remarkable detail.

For any culture which is primarily concerned with meaning, the study of death - the only certainty that life holds for us - must be central, for an understanding of death is the key to liberation in life.

Freud said that we are born as a tabula rasa. This is a model that simply is too superficial and inadequate.

So when I got out of the military, I went back to school in biology, and earned a biology degree at the University of Texas, and then did some graduate work in it.

Once you start putting in political subtext, it does create intellectually challenging science-fiction, but with 'Pacific Rim,' I always thought it would be a shame if kids couldn't go see this movie about giant robots fighting giant monsters because it seemed to have a political point of view.

Scientific innovations continually provide us with new means of analyzing the finds.

You get these moments of thrill. There you are, at 3:00 in the morning, and you know something about how we evolved that nobody else in the world knows. It's a thrill of discovery. You make this breakthrough, and you find something. It's this wonderful, wonderful scavenger hunt when you got to the end. It's just so great to be a scientist.