Most Achievers I Know Are People Who Have Made A Strong And Deep Dedication to Pursuing A Particular Goal. That Dedication Took A Tremendous Amount Of Effort.

My real father died when I was two years old, so I never knew him. He was a barber in Chicago.

As an undergraduate, I had an opportunity to go on a number of archeological digs. So I had experience excavating, digging up remains of ancient Indian villages in the Midwest and in the Southwest.

In our case, finding a Lucy is unique. No one will ever find another Lucy. You can't order one from a biological supply house. It's a unique discovery, a unique specimen.

Evolution explains our biological evolution, but human beings are very unique creatures. As the Dobzhansky said, all animals are unique; humans are the uniquest. And that uniqueness of being human, language, art, culture, our dependency on culture for survival, comes from the combination of traditional biological evolution.

There have been some friendships lost over this. That's the most difficult for me. I find it very uncomfortable to know that I was at one time close friends with someone, and because of jealousies and misunderstandings and so on, these friendships have dissolved.

One has to devote oneself to a particular pursuit. To be successful at anything, you have to make a total commitment to it.