"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."

"Rivers know this: There is no hurry. We shall get there someday."

"You have to be a speedy reader because there’s so so much to read."

"To sit in the shade on a fine day and look upon verdure is the most perfect refreshment."

"I am an Instrument of Nature.Love is my message."