In the US in the 1900's 60 % of people were employed on the farms. Today it's less than 1%. If you told people back then that this would happen they wouldn't have believed it. If you told them we would have therapy, massages and spas that played important parts in our lives they would've have believed us.

Technology must be implemented as part of a thoughtful, holistic approach to education transformation that includes teacher training, relevant curricula, parental involvement, and programs for children that fill unmet needs for basics like nutrition and health care.

We're only at the beginning of what we have to do here.

Nobody believes in completely unadulterated capitalism.

The human body is the most complex system ever created. The more we learn about it, the more appreciation we have about what a rich system it is.

The next time someone tells you we can trim the budget by cutting aid, I hope you will ask whether it will come at the cost of more people dying.

Know your numbers' is a fundamental precept of business.