If we develop in-depth knowledge, it will enable us to give our best to others and help to make a better world.

Do you have a brain? Then you can think your way out of it. The reason we have brains is so we can figure out how to do things.

Knowledge makes people special. Knowledge enriches life itself.

Our friends can't trust us anymore. You know, Ukraine was a nuclear-armed state. They gave away their nuclear arms with the understanding that we would protect them. We won't even give them offensive weapons.

I could easily have decided that life was cruel, that being black meant everything was stacked against me.

When I was 14, I tried to stab someone.

I see the insurance issue, the coverage of people for healthcare in our country as a huge moral issue. The richest country in the world to have 47 million people without health insurance is ridiculous.