Intelligence is what you use when you don't know what to do: when neither innateness nor learning has prepared you for the particular situation.

The main functions of intelligence, that of inventing solutions and that of verifying them, do not necessarily involve one another. The first partakes of imagination; the second alone is properly logical.

Logical activity is not the whole of intelligence. One can be intelligent without being particularly logical.

The current state of knowledge is a moment in history, changing just as rapidly as the state of knowledge in the past has ever changed and, in many instances, more rapidly.

Success is a lousy teacher. It seduces smart people into thinking they can't lose.

Well, financially it's a little bit better. But it's better than than when I was a teacher. But I kind of - it's allowed me to buy a house. And I've been able to help my mother with some stuff and my brother. So, that's nice.

The Common Core State Standards are based on the best international research. They are built on the standards used by the most effective education systems around the world, including Singapore, Finland, Canada and the U.K.

My own life values were shaped in great part by my mother, who instigated women's clubs in my village. Women were able to organize and stand together. What inspired me most about their work was the power it gave them to assert their rights and the rights of their daughters, be it education or property inheritance.