Ahmed Zewail
Ahmed Zewail

From the dawn of history, science has probed the universe of unknowns, searching for the uniting laws of nature.

Bjork
Bjork

I think every year brings unknowns that you have to deal with and handle, confront and embrace.

Bryant H. McGill
Bryant H. McGill

Birth and death; we all move between these two unknowns.

David E. Sanger
David E. Sanger

A Trump presidency will plunge the United States into an era of unknowns that has little parallel in the nation's 240-year history.

Debra Granik
Debra Granik

You can't make movies without known names, and unknowns can't become known, because they can't get work.

Donald Rumsfeld
Donald Rumsfeld

There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know.

Edward Boyden
Edward Boyden

I was interested in big unknowns, and the brain is one of the biggest, so building tools that allow us to regard the brain as a big electrical circuit appealed to me.

Ellen Burstyn
Ellen Burstyn

When we did 'The Last Picture Show,' the whole cast was unknowns, and we all got careers from it. Well, I don't think this could be done now.

Francis Picabia
Francis Picabia

The world is divided into two categories: failures and unknowns.

Gever Tulley
Gever Tulley

Tinkering is a way of understanding difficult problems, of wrapping our heads around them and quantifying the unknowns.