"Give me a lever long enough and a fulcrum on which to place it, and I shall move the world."
- Archimedes

"Wisdom is like electricity. There is no permanently wise man, but persons capable of wisdom, who, being put into certain company, or other favorable conditions, become wise for a short time, as glasses rubbed acquire electric power for a while."  
- Ralph Waldo Emerson

“Not only will atomic power be released, but someday we will harness the rise and fall of the tides and imprison the rays of the sun.”
- Thomas Edison

"We can't solve problems by using the same kind of thinking we used when we created them."
- Albert Einstein

"What's the use of a fine house if you haven't got a tolerable planet to put it on?"
- Henry David Thoreau