"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."

"I don't carry the burden of the past or the madness of the future. I live in the present."

"Non-violence is a weapon of the strong."

"I am convinced that the law of non-violence has come to stay."

"Non-violence is the weapon of the strong."

"Non-violence is the greatest force at the disposal of mankind."