Now intelligence seemed quantifiable. You could measure someone's actual or potential height, and now, it seemed, you could also measure someone's actual or potential intelligence. We had one dimension of mental ability along which we could array everyone... The whole concept has to be challenged; in fact, it has to be replaced.

If one develops good habits and routines, it is possible to be a responsible educator most of the time; and to marshal the special energies and reflection for those times, when the correct course of action is not clear, or when one is weighing one wrong against another wrong.

If you are not prepared to resign or be fired for what you believe in, then you are not a worker, let alone a professional. You are a slave.

A good person is one who follows the Ten Commandments and the golden rule. There is plenty of precedent in history to guide us and we probably evolved to be sensitive to Bible-Golden Rule situations. But the dilemmas faced by a worker - a journalist, an architect, an auditor - or by a citizen (what position to take on stem cell research, whether to run for office, what is the proper balance between taxation and social nets) - are not questions that can be answered by traditional texts or precedents.

My belief in why America has been doing so well up to now is that we have been propelled by our immigrants and our encouragement of technical innovation and, indeed, creativity across the board.

Intelligence is the ability to find and solve problems and create products of value in one's own culture.

Intelligences are enhanced when a person is engaged in activities that involve the exercise of that intelligence. It helps to have good teachers, ample resources, and personal motivation. Anyone can improve any intelligence; but it is easier to improve the intelligence if those factors are available and if you have high potential in that intelligence.