I think there is a sort of box-ticking mentality. Not just in the teaching profession. You hear about it in medicine and nursing. It's a lawyer-driven insistence on meeting prescribed standards rather than just being a good doctor.

In wildness is the preservation of the world.

In the four years since its launch, Kepler has chalked up 122 new and confirmed planets. It's also caught the scent of nearly three thousand additional objects, of which probably 80 percent or more will turn out to be other-worldly orbs.

Listen to many, speak to a few.

The most important thing is, Do you have the courage to admit that you're wrong? And do you change? The most important thing to me as a CEO is that we keep the courage.