"Extremism thrives amid ignorance and anger, intimidation and cowardice."

"I also did some jail time a few years ago. Spent a whole summer in jail reading books. I pumped a ton of new knowledge and new thinking into myself."

"A thousand years ago, everybody knew the Earth was the center of the universe. Five hundred years ago, they knew the Earth was flat. Fifteen minutes ago, you knew we humans were alone on it. Imagine what you'll know tomorrow."

"The pace at which people are taking to digital technology defies our stereotypes of age, education, language and income."

"A little knowledge is a dangerous thing. Drink deep, or taste not the Pierian spring."

"How clever you are, to know something of which you are ignorant."