Knowledge is indivisible. When people grow wise in one direction, they are sure to make it easier for themselves to grow wise in other directions as well.

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'

The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.

There is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that my ignorance is just as good as your knowledge.

I am honoured to join education innovators like Ms. Vicky Colbert, Dr. Madhav Chavan, and Sir Fazle Hasan Abed as the fourth WISE Prize for Education Laureate. I accept this prize on behalf of the million girls Camfed is committed to supporting through secondary education.

As skills and energy became more of a demand, people who didn't have skills just got left behind, got shuttled to the side. Education didn't keep up with their promise. Education didn't prepare them for this new world. Jobs went overseas.

It was my family that wanted me to be a teacher. That was safe, you see. To be a painter was terrible.

Before I got Doctor Who, I went to the Guildhall School of Music and Drama. I went back to take the final grade exam, which is the grade you have to take before you can take the teacher's diploma.