Uncertainty is not an indication of poor leadership; it underscores the need for leadership.

Uncertainty is a permanent part of the leadership landscape. It never goes away.

The church wasn't an organization in the first century. They weren't writing checks or buying property. The church has matured and developed over the years. But for some reason, the last thing to change is the structure of leadership.

If you're a preacher's kid, you see the church differently.

I'm developing a physiological theory of growth and oxygen requirement. If it's well-understood how fish require oxygen to grow, then we can understand how to deal with the impact of global warming.

I can't tell you how many times I get into a taxicab in New York or Los Angeles, and I'm talking to somebody who is a recent immigrant who was a doctor or lawyer or engineer or professor in the country they just came from. They're starting over again in life, and I think the majority of people out there can relate to that.

I became interested in educational technologies because I believe that they have the potential to transform how we practice and think about education and learning.

In the years to come, the combination of climate change and population growth could have a devastating effect on the planet and, needless to say, on humanity.