Donald Johanson Quotes

You don't just magically flip some evolutionary switch somewhere and transmute a quadruped into an upright-walking bipedal human.

It's very hard for all of us, when we've committed ourselves to a particular interpretation, to change our minds.

Evolution is a fact. It is the best explanation of what is known from observations. It's a theory as powerful as the theory of gravity.

All mammals undergo a certain degree of diversification. Darwin knew that. When he drew a family tree, it had many branches on it.

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

One has to take initiative in life to achieve what he or she wants.

Regardless of what we look like on the outside, genetically, on the inside, everyone is an African.

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

Scientists are very afraid of being proven wrong.

I was very intellectually oriented, very early on.