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

"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."

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

"You can't be unhappy when you are holding a cup of tea."

"Sometimes the smallest things take up the most room in your heart."

"I am not good at noticing when I'm happy, except in retrospect."