"That's one small step for man, one giant leap for mankind."

"Be the change that you wish to see in the world."

"I think, therefore I am."

"In the middle of difficulty lies opportunity."

"To be, or not to be: that is the question."

"Give me liberty, or give me death!"

"Float like a butterfly, sting like a bee."

"The only thing we have to fear is fear itself."

"Power tends to corrupt, and absolute power corrupts absolutely."

"Imagination is more important than knowledge."