If a movement is to have an impact it must belong to those who join it, not those who lead it.

There is a difference between giving directions and giving direction.

During World War II, the pilot losses were staggering. In some bombing raids, as many as 80% of the planes that left did not return.

I think most people are inherently interested in how their brain works, in what makes them tick.

Systems and processes are essential to keep the crusade going, but they should not replace the crusade.

Humility, I have learned, must never be confused with meekness. Humility is being open to the ideas of others.

If you go to the gym and you come home and look into the mirror, you'll see nothing. If you go the next day and you come home, you will see nothing. In fact sometimes you're in pain.