Early in life I had to choose between honest arrogance and hypocritical humility. I chose the former and have seen no reason to change.

The simplest questions are the most profound. Where were you born? Where is your home? Where are you going? What are you doing? Think about these once in a while and watch your answers change.

We now accept the fact that learning is a lifelong process of keeping abreast of change. And the most pressing task is to teach people how to learn.

Climate change is a terrible problem and it absolutely needs to be solved. It deserves to be a huge priority.

I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.

Instead of giving a politician the keys to the city it might be better to change the locks.

Constitutions should consist only of general provisions the reason is that they must necessarily be permanent and that they cannot calculate for the possible change of things.

This is the America that I love. This is a great people. We can do anything. We can achieve anything. We've got a government that has gotten in the way of the American people. We're going to change that in November.

Miracles happen everyday change your perception of what a miracle is and you'll see them all around you.

There is no progress whatever. Everything is just the same as it was thousands and tens of thousands of years ago. The outward form changes. The essence does not change.